v3.25.4
Shareholder Report
 12 Months Ended
Dec. 31, 2025
USD ($)
Holdings
Shareholder Report [Line Items]  
Document Type N-CSR
Amendment Flag false
Registrant Name ROYCE CAPITAL FUND
Entity Central Index Key 0001006387
Entity Investment Company Type N-1A
Document Period End Date Dec. 31, 2025
Shareholder Report Annual or Semi-Annual Annual Shareholder Report
Royce Capital Fund - Micro-Cap Portfolio - Investment Class  
Shareholder Report [Line Items]  
Fund Name Royce Capital Fund—Micro-Cap Portfolio
Class Name Investment Class
Trading Symbol RCMCX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Royce Capital Fund—Micro-Cap Portfolio for the period of January 1, 2025 to December 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www. royceinvest.com/literature. You can also request this information by contacting us at 1-800-221-4268.
Additional Information Phone Number 1-800-221-4268
Additional Information Website www. royceinvest.com/literature
Expenses [Text Block]

What Were the Fund’s Costs for the Last Year?

Based on a hypothetical $10,000 investment

 

  COSTS OF A COSTS PAID AS A PERCENTAGE
FUND/CLASS $10,000 INVESTMENT OF A $10,000 INVESTMENT
Royce Capital Fund—Micro-Cap Portfolio—Investment Class $130 1.22%
Expenses Paid, Amount $ 130
Expense Ratio, Percent 1.22%
Factors Affecting Performance [Text Block]

How Did the Fund Perform Last Year? What Affected the Fund’s Performance?

 

•Royce Capital Fund - Micro-Cap Portfolio advanced 13.89% for the year, lagging its benchmark, the Russell Microcap Index, which was up 22.98% for the same period.

 

•The Fund’s disadvantage versus its benchmark was primarily attributable to sector allocation.

 

Top Contributors to Performance

 

The sectors making the largest positive contributions were Industrials, Financials, and Information Technology.

 

At the industry level, electronic equipment, instruments & components (Information Technology), banks (Financials), and aerospace & defense (Industrials) contributed most.

 

The Fund’s top contributor was nLIGHT.

 

Stock selection within Financials contributed most to relative results versus the Russell Microcap Index.

 

Top Detractors from Performance

 

The sectors making the largest detractions were Consumer Discretionary, Real Estate, and Health Care.

 

At the industry level, professional services (Industrials), life sciences tools & services (Health Care), and software (Information Technology) were the largest detractors.

 

The Fund’s top detractor was American Outdoor Brands.

 

Stock selection within Health Care detracted most from relative results versus the Russell Microcap Index.
Performance Past Does Not Indicate Future [Text] Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]

Cumulative Performance: Value of $10,000

Invested from 12/31/15 through 12/31/25 ($)

 
Average Annual Return [Table Text Block]

Average Annual Total Returns

Through 12/31/25 (%) 1-YR 5-YR 10-YR
Investment Class 13.89 9.17 10.14
Russell 3000 Index 17.15 13.15 14.29
Russell Microcap Index 22.98 7.32 9.58
Russell 2000 Index 12.81 6.09 9.62
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit www.royceinvest.com/funds for more recent performance information
Net Assets $ 96,000,000
Holdings Count | Holdings 154
Advisory Fees Paid, Amount $ 1,200,000
Investment Company, Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

As of/through 12/31/25

 

Net Assets (Millions) $96
Number of Holdings 154
2025 Portfolio Turnover Rate 42%
Advisory Fees Paid in 2025 (Millions) $1.2
Holdings [Text Block]

Portfolio Sector Breakdown

 

 

Portfolio Sector Breakdown  
Industrials
 Information Technology
 Financials
 Health Care
Consumer Discretionary
Energy
 Materials
 Communication Services
Consumer Staples
Real Estate
Cash and Cash Equivalents

Largest Holdings [Text Block]

 

Top 10 Positions  
Establishment Labs Holdings 1.3
Natural Gas Services Group 1.3
LightPath Technologies Cl. A 1.3
Investar Holding 1.2
nLIGHT 1.2
NWPX Infrastructure 1.2
Bel Fuse Cl. B 1.2
RealReal 1.2
Digi International 1.1
Graham Corporation 1.1
Updated Prospectus Phone Number 1-800-221-4268
Updated Prospectus Web Address www.royceinvest.com
Royce Capital Fund - Micro-Cap Portfolio - Service Class  
Shareholder Report [Line Items]  
Fund Name Royce Capital Fund—Micro-Cap Portfolio
Class Name Service Class
Trading Symbol RCMSX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Royce Capital Fund—Micro-Cap Portfolio for the period of January 1, 2025 to December 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www. royceinvest.com/literature. You can also request this information by contacting us at 1-800-221-4268.
Additional Information Phone Number 1-800-221-4268
Additional Information Website www. royceinvest.com/literature
Expenses [Text Block]

What Were the Fund’s Costs for the Last Year?

Based on a hypothetical $10,000 investment

 

  COSTS OF A COSTS PAID AS A PERCENTAGE
FUND/CLASS $10,000 INVESTMENT OF A $10,000 INVESTMENT
Royce Capital Fund—Micro-Cap Portfolio—Service Class $162 1.52%
Expenses Paid, Amount $ 162
Expense Ratio, Percent 1.52%
Factors Affecting Performance [Text Block]

How Did the Fund Perform Last Year? What Affected the Fund’s Performance?

 

•Royce Capital Fund - Micro-Cap Portfolio advanced 13.58% for the year, lagging its benchmark, the Russell Microcap Index, which was up 22.98% for the same period.

 

•The Fund’s disadvantage versus its benchmark was primarily attributable to sector allocation.

 

Top Contributors to Performance

 

The sectors making the largest positive contributions were Industrials, Financials, and Information Technology.

 

At the industry level, electronic equipment, instruments & components (Information Technology), banks (Financials), and aerospace & defense (Industrials) contributed most.

 

The Fund’s top contributor was nLIGHT.

 

Stock selection within Financials contributed most to relative results versus the Russell Microcap Index.

 

Top Detractors from Performance

 

The sectors making the largest detractions were Consumer Discretionary, Real Estate, and Health Care.

 

At the industry level, professional services (Industrials), life sciences tools & services (Health Care), and software (Information Technology) were the largest detractors.

 

The Fund’s top detractor was American Outdoor Brands.

 

Stock selection within Health Care detracted most from relative results versus the Russell Microcap Index.
Performance Past Does Not Indicate Future [Text] Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]

Cumulative Performance: Value of $10,000

Invested from 12/31/15 through 12/31/25 ($)

 

 

Investment_Value_Date
Average Annual Return [Table Text Block]

Average Annual Total Returns

Through 12/31/25 (%) 1-YR 5-YR 10-YR
Service Class 13.58 8.85 9.86
Russell 3000 Index 17.15 13.15 14.29
Russell Microcap Index 22.98 7.32 9.58
Russell 2000 Index 12.81 6.09 9.62
Visit www.royceinvest.com/funds for more recent performance information  
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit www.royceinvest.com/funds for more recent performance information
Net Assets $ 96,000,000
Holdings Count | Holdings 154
Advisory Fees Paid, Amount $ 1,200,000
Investment Company, Portfolio Turnover 42.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

As of/through 12/31/25

 

Net Assets (Millions) $96
Number of Holdings 154
2025 Portfolio Turnover Rate 42%
Advisory Fees Paid in 2025 (Millions) $1.2
Holdings [Text Block]

Portfolio Sector Breakdown

 

Portfolio Sector Breakdown  
Industrials
 Information Technology
 Financials
 Health Care
Consumer Discretionary
Energy
 Materials
 Communication Services
Consumer Staples
Real Estate
Cash and Cash Equivalents
Largest Holdings [Text Block]

 

Top 10 Positions  
Establishment Labs Holdings 1.3
Natural Gas Services Group 1.3
LightPath Technologies Cl. A 1.3
Investar Holding 1.2
nLIGHT 1.2
NWPX Infrastructure 1.2
Bel Fuse Cl. B 1.2
RealReal 1.2
Digi International 1.1
Graham Corporation 1.1
Updated Prospectus Phone Number 1-800-221-4268
Updated Prospectus Web Address www.royceinvest.com
Royce Capital Fund-Small-Cap Portfolio - Investment Class  
Shareholder Report [Line Items]  
Fund Name Royce Capital Fund—Small-Cap Portfolio
Class Name Investment Class
Trading Symbol RCPFX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Royce Capital Fund—Small-Cap Portfolio for the period of January 1, 2025 to December 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.royceinvest.com/literature. You can also request this information by contacting us at 1-800-221-4268.
Additional Information Phone Number 1-800-221-4268
Additional Information Website www.royceinvest.com/literature
Expenses [Text Block]

What Were the Fund’s Costs for the Last Year?

Based on a hypothetical $10,000 investment

 

  COSTS OF A COSTS PAID AS A PERCENTAGE
FUND/CLASS $10,000 INVESTMENT OF A $10,000 INVESTMENT
Royce Capital Fund—Small-Cap Portfolio—Investment Class $123 1.18%
Expenses Paid, Amount $ 123
Expense Ratio, Percent 1.18%
Factors Affecting Performance [Text Block]

How Did the Fund Perform Last Year? What Affected the Fund’s Performance?

 

•Royce Capital Fund—Small-Cap Portfolio advanced 8.93% for the year, lagging its benchmark, the Russell 2000 Value Index, which was up 12.59% for the same period.

 

•The Fund’s disadvantage versus its benchmark was primarily attributable to stock selection.

 

Top Contributors to Performance

 

The sectors making the largest positive contributions were Information Technology, Financials, and Industrials.

 

At the industry level, electronic equipment, instruments & components (Information Technology), banks (Financials), and commercial services & supplies (Industrials) contributed most.

 

The Fund’s top contributor was Sanmina Corporation.

 

Stock selection within Information Technology contributed most to relative results versus the Russell 2000 Value Index.

 

Top Detractors from Performance

 

The sectors making the largest detractions were Energy, Consumer Discretionary, and Real Estate.

 

At the industry level, oil, gas & consumable fuels (Energy), specialty retail (Consumer Discretionary), and ground transportation (Industrials) were the largest detractors.

 

The Fund’s top detractor was SM Energy.

 

Stock selection within Consumer Discretionary detracted most from relative results versus the Russell 2000 Value Index.
Performance Past Does Not Indicate Future [Text] Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]

Cumulative Performance: Value of $10,000

Invested from 12/31/15 through 12/31/25 ($)

 

Investment_Value_Date
Average Annual Return [Table Text Block]

Average Annual Total Returns

Through 12/31/25 (%) 1-YR 5-YR 10-YR
Investment Class 8.93 10.66 7.88
Russell 3000 Index 17.15 13.15 14.29
Russell 2000 Value Index 12.59 8.88 9.27
Russell 2000 Index 12.81 6.09 9.62
Visit www.royceinvest.com/funds for more recent performance information  
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit www.royceinvest.com/funds for more recent performance information
Net Assets $ 174,000,000
Holdings Count | Holdings 80
Advisory Fees Paid, Amount $ 2,200,000
Investment Company, Portfolio Turnover 79.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

As of/through 12/31/25

 

Net Assets (Millions) $174
Number of Holdings 80
2025 Portfolio Turnover Rate 79%
Advisory Fees Paid in 2025 (Millions) $2.2
Holdings [Text Block]

Portfolio Sector Breakdown

 

Portfolio Sector Breakdown  
Financials
Consumer Discretionary
Industrials
Information Technology
Health Care
Energy
Consumer Staples
Materials
Cash and Cash Equivalents
Largest Holdings [Text Block]

 

Top 10 Positions  
Diebold Nixdorf 2.0
Lear Corporation 2.0
IBEX 2.0
Catalyst Pharmaceuticals 1.9
TD SYNNEX 1.8
Timberland Bancorp 1.8
Unity Bancorp 1.8
M/I Homes 1.8
Buckle (The) 1.8
PulteGroup 1.8
Updated Prospectus Phone Number 1-800-221-4268
Updated Prospectus Web Address www.royceinvest.com
Royce Capital Fund-Small-Cap Portfolio - Service Class  
Shareholder Report [Line Items]  
Fund Name Royce Capital Fund—Small-Cap Portfolio
Class Name Service Class
Trading Symbol RCSSX
Annual or Semi-Annual Statement [Text Block] This annual shareholder report contains important information about Royce Capital Fund—Small-Cap Portfolio for the period of January 1, 2025 to December 31, 2025.
Shareholder Report Annual or Semi-Annual annual shareholder report
Additional Information [Text Block] You can find additional information about the Fund at www.royceinvest.com/literature. You can also request this information by contacting us at 1-800-221-4268.
Additional Information Phone Number 1-800-221-4268
Additional Information Website www.royceinvest.com/literature
Expenses [Text Block]

What Were the Fund’s Costs for the Last Year?

Based on a hypothetical $10,000 investment

 

  COSTS OF A COSTS PAID AS A PERCENTAGE
FUND/CLASS $10,000 INVESTMENT OF A $10,000 INVESTMENT
Royce Capital Fund—Small-Cap Portfolio—Service Class $150 1.44%
Expenses Paid, Amount $ 150
Expense Ratio, Percent 1.44%
Factors Affecting Performance [Text Block]

How Did the Fund Perform Last Year? What Affected the Fund’s Performance?

 

•Royce Capital Fund—Small-Cap Portfolio advanced 8.73% for the year, lagging its benchmark, the Russell 2000 Value Index, which was up 12.59% for the same period.

 

•The Fund’s disadvantage versus its benchmark was primarily attributable to stock selection.

 

Top Contributors to Performance

 

The sectors making the largest positive contributions were Information Technology, Financials, and Industrials.

 

At the industry level, electronic equipment, instruments & components (Information Technology), banks (Financials), and commercial services & supplies (Industrials) contributed most.

 

The Fund’s top contributor was Sanmina Corporation.

 

Stock selection within Information Technology contributed most to relative results versus the Russell 2000 Value Index.

 

Top Detractors from Performance

 

The sectors making the largest detractions were Energy, Consumer Discretionary, and Real Estate.

 

At the industry level, oil, gas & consumable fuels (Energy), specialty retail (Consumer Discretionary), and ground transportation (Industrials) were the largest detractors.

 

The Fund’s top detractor was SM Energy.

 

Stock selection within Consumer Discretionary detracted most from relative results versus the Russell 2000 Value Index.
Performance Past Does Not Indicate Future [Text] Keep in mind that the Fund’s past performance is not a good predictor of how the Fund will perform in the future.
Line Graph [Table Text Block]

Cumulative Performance: Value of $10,000

Invested from 12/31/15 through 12/31/25 ($)

 

 

 

Investment_Value_Date
31-12-2015 10000 10000 10000 10000
31-01-2016 9782 9436 9328 9121
29-02-2016 10145 9433 9392 9120
31-03-2016 10907 10097 10170 9848
30-04-2016 10593 10159 10386 10003
31-05-2016 10242 10341 10576 10228
30-06-2016 10278 10362 10608 10222
31-07-2016 10822 10774 11181 10832
31-08-2016 10883 10801 11458 11023
30-09-2016 10701 10818 11549 11146
31-10-2016 10254 10584 11169 10616
30-11-2016 11584 11058 12652 11800
31-12-2016 12053 11274 13174 12131
31-01-2017 11789 11486 13080 12179
28-02-2017 11848 11913 13269 12414
31-03-2017 11877 11921 13157 12430
30-04-2017 11745 12047 13209 12566
31-05-2017 11230 12171 12797 12311
30-06-2017 11554 12280 13245 12736
31-07-2017 11363 12512 13329 12831
31-08-2017 11172 12536 13001 12668
30-09-2017 12127 12842 13922 13458
31-10-2017 12156 13122 13940 13573
30-11-2017 12774 13521 14344 13964
31-12-2017 12668 13656 14207 13908
31-01-2018 12727 14375 14382 14271
28-02-2018 12298 13846 13663 13718
31-03-2018 12609 13568 13832 13896
30-04-2018 12535 13619 14071 14016
31-05-2018 13439 14004 14890 14867
30-06-2018 13557 14095 14980 14973
31-07-2018 13913 14563 15245 15234
31-08-2018 14402 15074 15608 15891
30-09-2018 13646 15099 15221 15509
31-10-2018 12609 13988 13858 13824
30-11-2018 12979 14268 14081 14044
31-12-2018 11592 12940 12379 12376
31-01-2019 12843 14051 13733 13768
28-02-2019 13446 14545 14267 14484
31-03-2019 12677 14757 13856 14181
30-04-2019 13340 15346 14380 14662
31-05-2019 11592 14353 13205 13522
30-06-2019 12571 15361 14046 14478
31-07-2019 12752 15590 14069 14561
31-08-2019 12104 15272 13284 13842
30-09-2019 12828 15540 13966 14130
31-10-2019 13024 15874 14304 14502
30-11-2019 13385 16478 14639 15099
31-12-2019 13729 16954 15151 15535
31-01-2020 12821 16935 14334 15037
29-02-2020 11141 15549 12941 13771
31-03-2020 8313 13410 9748 10779
30-04-2020 9204 15187 10951 12259
31-05-2020 9547 15999 11265 13057
30-06-2020 9804 16364 11591 13519
31-07-2020 9821 17294 11830 13893
31-08-2020 10472 18546 12468 14676
30-09-2020 10061 17871 11887 14185
31-10-2020 10335 17485 12313 14482
30-11-2020 11981 19613 14690 17152
31-12-2020 12723 20495 15853 18636
31-01-2021 13004 20404 16688 19573
28-02-2021 14373 21042 18255 20793
31-03-2021 15373 21796 19209 21002
30-04-2021 15952 22919 19598 21443
31-05-2021 16145 23024 20208 21487
30-06-2021 15671 23592 20085 21904
31-07-2021 15443 23991 19366 21113
31-08-2021 15742 24675 19885 21585
30-09-2021 15092 23568 19486 20949
31-10-2021 15584 25161 20229 21840
30-11-2021 15408 24778 19538 20930
31-12-2021 16342 25754 20335 21397
31-01-2022 15188 24239 19150 19337
28-02-2022 15063 23628 19467 19544
31-03-2022 14832 24395 19847 19787
30-04-2022 13997 22206 18307 17826
31-05-2022 14424 22176 18658 17853
30-06-2022 13198 20321 16815 16385
31-07-2022 14708 22227 18443 18095
31-08-2022 14388 21397 17860 17725
30-09-2022 13056 19413 16040 16026
31-10-2022 14744 21005 18059 17790
30-11-2022 15845 22102 18611 18206
31-12-2022 14804 20808 17390 17024
31-01-2023 16052 22241 19050 18684
28-02-2023 15926 21721 18610 18368
31-03-2023 15274 22302 17276 17491
30-04-2023 14587 22539 16845 17176
31-05-2023 14496 22627 16514 17017
30-06-2023 15980 24172 17825 18401
31-07-2023 16849 25039 19171 19526
31-08-2023 16613 24555 18248 18549
30-09-2023 16016 23386 17298 17457
31-10-2023 15473 22766 16266 16267
30-11-2023 16559 24888 17730 17739
31-12-2023 18583 26209 19937 19906
31-01-2024 17829 26499 19031 19132
29-02-2024 18385 27933 19654 20214
31-03-2024 19277 28835 20515 20938
30-04-2024 18028 27566 19208 19464
31-05-2024 18762 28868 20107 20440
30-06-2024 18067 29762 19768 20251
31-07-2024 20328 30315 22177 22309
31-08-2024 19595 30975 21761 21976
30-09-2024 19595 31616 21774 22129
31-10-2024 19059 31384 21434 21810
30-11-2024 20666 33471 23501 24202
31-12-2024 19189 32448 21543 22203
31-01-2025 19460 33473 21985 22785
28-02-2025 18064 32831 21144 21567
31-03-2025 17126 30916 19875 20099
30-04-2025 16501 30709 19077 19634
31-05-2025 17251 32655 19878 20683
30-06-2025 18189 34314 20862 21807
31-07-2025 18418 35070 21230 22185
31-08-2025 20481 35881 23028 23770
30-09-2025 20314 37120 23491 24510
31-10-2025 20022 37915 23550 24953
30-11-2025 20772 38019 24212 25193
31-12-2025 20863 38012 24256 25047
Average Annual Return [Table Text Block]

Average Annual Total Returns

Through 12/31/25 (%) 1-YR 5-YR 10-YR
Service Class 8.73 10.40 7.63
Russell 3000 Index 17.15 13.15 14.29
Russell 2000 Value Index 12.59 8.88 9.27
Russell 2000 Index 12.81 6.09 9.62
Visit www.royceinvest.com/funds for more recent performance information  
No Deduction of Taxes [Text Block] The graph and table do not reflect the deduction of taxes that a shareholder would pay on Fund distributions or redemption of Fund shares.
Updated Performance Information Location [Text Block] Visit www.royceinvest.com/funds for more recent performance information
Net Assets $ 174,000,000
Holdings Count | Holdings 80
Advisory Fees Paid, Amount $ 2,200,000
Investment Company, Portfolio Turnover 79.00%
Additional Fund Statistics [Text Block]

Key Fund Statistics

As of/through 12/31/25

 

Net Assets (Millions) $174
Number of Holdings 80
2025 Portfolio Turnover Rate 79%
Advisory Fees Paid in 2025 (Millions) $2.2
Holdings [Text Block]

Portfolio Sector Breakdown

 

Sector Breakdown
Financials
Consumer Discretionary
Industrials
Information Technology
Health Care
Energy
Consumer Staples
Materials
Cash and Cash Equivalents
Largest Holdings [Text Block]

 

Top 10 Positions  
Diebold Nixdorf 2.0
Lear Corporation 2.0
IBEX 2.0
Catalyst Pharmaceuticals 1.9
TD SYNNEX 1.8
Timberland Bancorp 1.8
Unity Bancorp 1.8
M/I Homes 1.8
Buckle (The) 1.8
PulteGroup 1.8
Updated Prospectus Phone Number 1-800-221-4268
Updated Prospectus Web Address www.royceinvest.com