v3.26.1
Debt securities available-for-sale (Tables)
 6 Months Ended
Jun. 30, 2026
Debt Securities, Available-for-Sale [Abstract]  
Schedule of Amortized Cost, Gross Unrealized Gains and Losses, Fair Value, Weighted Average Yield and Contractual Maturities of Debt Securities Available-for-Sale The following tables present the amortized cost, gross unrealized gains and losses, fair value, weighted average yield and contractual
maturities of debt securities available-for-sale at June 30, 2026 and December 31, 2025.
At June 30, 2026
(In thousands)
Amortized
cost
Gross
unrealized
gains
Gross
unrealized
losses
Fair
value
Weighted
average
yield
U.S. Treasury securities
Within 1 year
$13,413,909
$338
$5,472
$13,408,775
3.56%
After 1 to 5 years
6,928,574
1,001
67,742
6,861,833
3.71
Total U.S. Treasury securities
20,342,483
1,339
73,214
20,270,608
3.61
Collateralized mortgage obligations - federal agencies
Within 1 year
44
-
-
44
5.42
After 1 to 5 years
2,930
-
50
2,880
1.48
After 5 to 10 years
9,680
1
481
9,200
2.48
After 10 years
83,627
45
6,263
77,409
2.95
Total collateralized mortgage obligations - federal agencies
96,281
46
6,794
89,533
2.86
Mortgage-backed securities - federal agencies
Within 1 year
477
-
3
474
2.22
After 1 to 5 years
101,278
13
3,698
97,593
2.14
After 5 to 10 years
1,028,726
107
85,945
942,888
1.75
After 10 years
4,183,655
556
792,994
3,391,217
1.77
Total mortgage-backed securities - federal agencies
5,314,136
676
882,640
4,432,172
1.78
Other
After 1 to 5 years
521
-
-
521
5.00
Total other
521
-
-
521
5.00
Total debt securities available-for-sale[1]
$25,753,421
$2,061
$962,648
$24,792,834
3.23%
[1]Includes $18.9 billion pledged to secure government and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing
agreements that the secured parties are not permitted to sell or repledge the collateral, of which $17.6 billion serve as collateral for public funds. The
Corporation had unpledged Available for Sale securities with a fair value of $5.7 billion that could be used to increase its borrowing facilities.
At December 31, 2025
(In thousands)
Amortized
cost
Gross
unrealized
gains
Gross
unrealized
losses
Fair
value
Weighted
average
yield
U.S. Treasury securities
Within 1 year
$10,154,698
$4,716
$1,528
$10,157,886
3.44%
After 1 to 5 years
5,555,079
29,795
19,306
5,565,568
3.70
Total U.S. Treasury securities
15,709,777
34,511
20,834
15,723,454
3.53
Collateralized mortgage obligations - federal agencies
Within 1 year
152
-
1
151
1.97
After 1 to 5 years
4,879
-
88
4,791
1.49
After 5 to 10 years
11,524
-
482
11,042
2.45
After 10 years
90,018
180
5,941
84,257
2.92
Total collateralized mortgage obligations - federal agencies
106,573
180
6,512
100,241
2.80
Mortgage-backed securities - federal agencies
Within 1 year
963
1
9
955
2.08
After 1 to 5 years
65,843
11
1,530
64,324
2.35
After 5 to 10 years
1,030,661
256
67,116
963,801
1.85
After 10 years
4,527,032
881
806,466
3,721,447
1.75
Total mortgage-backed securities - federal agencies
5,624,499
1,149
875,121
4,750,527
1.78
Other
Within 1 year
750
-
-
750
4.43
Total other
750
-
-
750
4.43
Total debt securities available-for-sale[1]
$21,441,599
$35,840
$902,467
$20,574,972
3.07%
[1] Includes $14.3 billion pledged to secure government and trust deposits, assets sold under agreements to repurchase, credit facilities and loan servicing
agreements that the secured parties are not permitted to sell or repledge the collateral, of which $13.2 billion serve as collateral for public funds. The
Corporation had unpledged Available for Sale securities with a fair value of $6.3 billion that could be used to increase its borrowing facilities.
Schedule of Fair Value and Gross Unrealized Losses of Debt Securities Available-for-Sale Unrealized Loss Position The following tables present the Corporation’s fair value and gross unrealized losses of debt securities available-for-sale, aggregated by
investment category and length of time that individual securities have been in a continuous unrealized loss position at June 30, 2026 and
December 31, 2025.
At June 30, 2026
Less than 12 months
12 months or more
Total
(In thousands)
Fair
value
Gross
unrealized
losses
Fair
value
Gross
unrealized
losses
Fair
value
Gross
unrealized
losses
U.S. Treasury securities
$17,032,384
$51,923
$440,538
$21,291
$17,472,922
$73,214
Collateralized mortgage obligations - federal agencies
9,946
85
70,494
6,709
80,440
6,794
Mortgage-backed securities -federal agencies
208,344
10,374
4,185,326
872,266
4,393,670
882,640
Total debt securities available-for-sale in an unrealized loss position
$17,250,674
$62,382
$4,696,358
$900,266
$21,947,032
$962,648
At December 31, 2025
Less than 12 months
12 months or more
Total
(In thousands)
Fair
value
Gross
unrealized
losses
Fair
value
Gross
unrealized
losses
Fair
value
Gross
unrealized
losses
U.S. Treasury securities
$992,083
$82
$943,699
$20,752
$1,935,782
$20,834
Collateralized mortgage obligations - federal agencies
1,481
3
83,266
6,509
84,747
6,512
Mortgage-backed securities - federal agencies
222,333
9,975
4,469,097
865,146
4,691,430
875,121
Total debt securities available-for-sale in an unrealized loss position
$1,215,897
$10,060
$5,496,062
$892,407
$6,711,959
$902,467