v3.26.3
Investment Securities
9 Months Ended
Sep. 30, 2026
Investments, Debt and Equity Securities [Abstract]  
Investment Securities Investment Securities
The following tables are a summary of the investment securities portfolios as of the dates shown:
September 30, 2026
(In thousands)Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
Available-for-sale securities
U.S. Treasury$3,000 $— $— $3,000 
U.S. government agencies50,000 — (6,169)43,831 
Municipal171,215 30 (6,921)164,324 
Corporate notes:
Financial issuers75,000 — (1,944)73,056 
Other1,000 — (38)962 
Mortgage-backed: (1)
Residential mortgage-backed securities6,928,051 15 (850,890)6,077,176 
Commercial (multi-family) mortgage-backed securities388,399 — (28,242)360,157 
Collateralized mortgage obligations890,442 25 (43,475)846,992 
Total available-for-sale securities$8,507,107 $70 $(937,679)$7,569,498 
Held-to-maturity securities
U.S. government agencies$313,542 $— $(79,946)$233,596 
Municipal133,408 57 (6,709)126,756 
Mortgage-backed: (1)
Residential mortgage-backed securities2,475,956 — (611,175)1,864,781 
Commercial (multi-family) mortgage-backed securities35,838 — (5,135)30,703 
Collateralized mortgage obligations153,997 3 (23,998)130,002 
Corporate notes7,975 — (293)7,682 
Total held-to-maturity securities$3,120,716 $60 $(727,256)$2,393,520 
Less: Allowance for credit losses(213)
Held-to-maturity securities, net of allowance for credit losses$3,120,503 
Equity securities with readily determinable fair value $62,242 $7,960 $(5,391)$64,811 
(1)None of our mortgage-backed securities are subprime.
December 31, 2025
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
(In thousands)
Available-for-sale securities
U.S. Treasury$6,999 $36 $— $7,035 
U.S. government agencies50,000 — (2,529)47,471 
Municipal162,373 1,643 (1,850)162,166 
Corporate notes:
Financial issuers79,000 — (2,704)76,296 
Other1,000 — (1)999 
Mortgage-backed: (1)
Residential mortgage-backed securities5,533,710 25,926 (402,953)5,156,683 
Commercial (multi-family) mortgage-backed securities280,969 570 (4,986)276,553 
Collateralized mortgage obligations521,430 2,305 (14,675)509,060 
Total available-for-sale securities$6,635,481 $30,480 $(429,698)$6,236,263 
Held-to-maturity securities
U.S. government agencies$313,541 $— $(57,269)$256,272 
Municipal144,192 451 (2,012)142,631 
Mortgage-backed: (1)
Residential Mortgage-backed securities2,667,371 7,503 (491,124)2,183,750 
Commercial (multi-family) mortgage-backed securities6,293 72 (92)6,273 
Collateralized mortgage obligations177,671 836 (16,989)161,518 
Corporate notes35,097 2 (396)34,703 
Total held-to-maturity securities$3,344,165 $8,864 $(567,882)$2,785,147 
Less: Allowance for credit losses(260)
Held-to-maturity securities, net of allowance for credit losses$3,343,905 
Equity securities with readily determinable fair value$61,211 $6,318 $(3,759)$63,770 
(1)None of our mortgage-backed securities are subprime.
September 30, 2025
Amortized
Cost
Gross
Unrealized
Gains
Gross
Unrealized
Losses
Fair
Value
(In thousands)
Available-for-sale securities
U.S. Treasury$7,997 $39 $— $8,036 
U.S. government agencies50,000 — (3,489)46,511 
Municipal194,723 1,673 (2,152)194,244 
Corporate notes:
Financial issuers82,000 — (2,628)79,372 
Other1,000 — — 1,000 
Mortgage-backed: (1)
Residential mortgage-backed securities4,761,918 17,519 (419,975)4,359,462 
Commercial (multi-family) mortgage-backed securities233,127 347 (5,136)228,338 
Collateralized mortgage obligations371,584 2,373 (16,796)357,161 
Total available-for-sale securities$5,702,349 $21,951 $(450,176)$5,274,124 
Held-to-maturity securities
U.S. government agencies$313,540 $— $(59,178)$254,362 
Municipal155,770 458 (2,283)153,945 
Mortgage-backed: (1)
Residential mortgage-backed securities2,724,442 5,421 (505,165)2,224,698 
Commercial (multi-family) mortgage-backed securities6,315 65 (102)6,278 
Collateralized mortgage obligations188,223 980 (17,400)171,803 
Corporate notes50,511 26 (653)49,884 
Total held-to-maturity securities$3,438,801 $6,950 $(584,781)$2,860,970 
Less: Allowance for credit losses(395)
Held-to-maturity securities, net of allowance for credit losses$3,438,406 
Equity securities with readily determinable fair value$60,843 $6,520 $(3,918)$63,445 
(1)None of our mortgage-backed securities are subprime.

Equity securities without readily determinable fair values totaled $71.7 million as of September 30, 2026. Equity securities without readily determinable fair values are included as part of accrued interest receivable and other assets in the Company’s Consolidated Statements of Condition. The Company monitors its equity investments without readily determinable fair values to identify potential transactions that may indicate an observable price change in orderly transactions for the identical or a similar investment of the same issuer, requiring adjustment to its carrying amount. During the three and nine months ended September 30, 2026, the Company recorded no upward or downward adjustments related to such observable price changes. During the three months ended September 30, 2025, the Company recorded no adjustment related to such observable price changes. During the nine months ended September 30, 2025, the Company recorded no upward adjustment and a downward adjustment of $20,000 related to such observable price changes. The Company conducts a quarterly assessment of its equity securities without readily determinable fair values to determine whether impairment exists in such securities, considering, among other factors, the nature of the securities, financial condition of the issuer and expected future cash flows. During the three and nine months ended September 30, 2026, the Company recorded $558,000 of impairment of equity securities without readily determinable fair values. During the three and nine months ended September 30, 2025, the Company recorded $570,000 and $1.6 million of impairment of equity securities without readily determinable fair values.
The following table presents the portion of the Company’s available-for-sale investment securities portfolios that have gross unrealized losses, reflecting the length of time that individual securities have been in a continuous unrealized loss position at September 30, 2026:
Continuous unrealized
losses existing for
less than 12 months
Continuous unrealized
losses existing for
greater than 12 months
Total
(In thousands)Fair ValueUnrealized LossesFair ValueUnrealized LossesFair ValueUnrealized Losses
Available-for-sale securities
U.S. government agencies$— $— $43,831 $(6,169)$43,831 $(6,169)
Municipal127,329 (4,295)27,222 (2,626)154,551 (6,921)
Corporate notes:
Financial issuers— — 73,056 (1,944)73,056 (1,944)
Other962 (38)— — 962 (38)
Mortgage-backed: (1)
Residential mortgage-backed securities4,185,360 (311,685)1,885,320 (539,205)6,070,680 (850,890)
Commercial (multi-family) mortgage-backed securities199,929 (14,351)160,228 (13,891)360,157 (28,242)
Collateralized mortgage obligations776,860 (25,500)60,644 (17,975)837,504 (43,475)
Total available-for-sale securities$5,290,440 $(355,869)$2,250,301 $(581,810)$7,540,741 $(937,679)
(1)None of our mortgage-backed securities are subprime.

The Company conducts a regular assessment of its investment securities to determine whether securities are experiencing credit losses. Factors for consideration include the nature of the securities, credit ratings or financial condition of the issuer, the extent of the unrealized loss, expected cash flows, market conditions and the Company’s ability to hold the securities through the anticipated recovery period.

The Company does not consider available-for-sale securities with unrealized losses at September 30, 2026 to be experiencing credit losses and recognized no resulting allowance for credit losses for such individually assessed credit losses. The Company does not intend to sell these investments and it is more likely than not that the Company will not be required to sell these investments before recovery of the amortized cost bases, which may be the maturity dates of the securities. The unrealized losses within each category have occurred as a result of changes in interest rates, market spreads and market conditions subsequent to purchase. Available-for-sale securities with continuous unrealized losses existing for more than twelve months at September 30, 2026 were primarily mortgage-backed securities with unrealized losses due to increased market rates subsequent to the date the securities were purchased.

See Note (6) “Allowance for Credit Losses” in Item 1 of this report for further discussion regarding any credit losses associated with held-to-maturity securities at September 30, 2026.
The following table provides information as to the amount of gross gains and losses, adjustments and impairment on investment securities recognized in earnings and proceeds received through the sale or call of investment securities:
Three months ended September 30,Nine months ended September 30,
(In thousands)2026202520262025
Realized gains on investment securities$263 $3,563 $926 $3,846 
Realized losses on investment securities(69)(2,689)(185)(3,313)
Net realized gains on investment securities194 874 741 533 
Unrealized gains on equity securities with readily determinable fair value436 3,352 2,322 8,689 
Unrealized losses on equity securities with readily determinable fair value(1,693)(684)(2,312)(741)
Net unrealized (losses) gains on equity securities with readily determinable fair value(1,257)2,668 10 7,948 
Downward adjustments of equity securities without readily determinable fair values— — — (20)
Impairment of equity securities without readily determinable fair values(558)(570)(558)(1,643)
Adjustment and impairment, net, of equity securities without readily determinable fair values(558)(570)(558)(1,663)
(Losses) gains on investment securities, net$(1,621)$2,972 $193 $6,818 

The amortized cost and fair value of available-for-sale and held-to-maturity investment securities as of September 30, 2026, December 31, 2025 and September 30, 2025, by contractual maturity, are shown in the following table. Contractual maturities may differ from actual maturities as borrowers may have the right to call or repay obligations with or without call or prepayment penalties. Mortgage-backed securities are not included in the maturity categories in the following maturity summary as actual maturities may differ from contractual maturities because the underlying mortgages may be called or prepaid without penalties:
September 30, 2026December 31, 2025September 30, 2025
(In thousands)Amortized CostFair ValueAmortized CostFair ValueAmortized CostFair Value
Available-for-sale securities
Due in one year or less$48,833 $48,700 $47,978 $47,915 $58,284 $58,315 
Due in one to five years146,758 142,968 143,352 141,123 160,939 159,081 
Due in five to ten years75,361 69,334 80,561 79,672 89,505 87,359 
Due after ten years29,263 24,171 27,481 25,257 26,992 24,408 
Mortgage-backed8,206,892 7,284,325 6,336,109 5,942,296 5,366,629 4,944,961 
Total available-for-sale securities$8,507,107 $7,569,498 $6,635,481 $6,236,263 $5,702,349 $5,274,124 
Held-to-maturity securities
Due in one year or less$20,949 $20,888 $47,030 $46,630 $44,853 $44,288 
Due in one to five years73,196 71,002 76,452 76,366 81,277 81,174 
Due in five to ten years60,751 53,836 67,195 63,882 91,067 87,541 
Due after ten years300,029 222,308 302,153 246,728 302,624 245,188 
Mortgage-backed2,665,791 2,025,486 2,851,335 2,351,541 2,918,980 2,402,779 
Total held-to-maturity securities$3,120,716 $2,393,520 $3,344,165 $2,785,147 $3,438,801 $2,860,970 
Less: Allowance for credit losses(213)(260)(395)
Held-to-maturity securities, net of allowance for credit losses$3,120,503 $3,343,905 $3,438,406 

Securities having a carrying value of $9.3 billion at September 30, 2026 as well as securities having a carrying value of $8.6 billion and $8.0 billion at December 31, 2025 and September 30, 2025, respectively, were pledged as collateral for public deposits, trust deposits, Federal Home Loan Bank (“FHLB”) advances, Federal Reserve Bank (“FRB”) discount window,
securities sold under repurchase agreements and derivatives. At September 30, 2026, there were no securities of a single issuer, other than U.S. government-sponsored agency securities, which exceeded 10% of shareholders’ equity.