| Balance Sheets | 2026-03-31 | 2025-12-31 | 2025-09-30 | 2025-06-30 |
|---|---|---|---|---|
| Cash and due from banks | 543,654 | 467,874 | 565,406 | 695,501 |
| Federal funds sold and securities purchased under resale agreements | 65 | 64 | 63 | 63 |
| Interest-bearing deposits with banks | 3,051,665 | 3,180,553 | 3,422,452 | 4,569,618 |
| Available-for-sale securities, at fair value | 7,244,282 | 6,236,263 | 5,274,124 | 4,885,715 |
| Gross unrealized gains-USGovernment Agencies Debt Securities | 0 | 0 | 0 | NaN |
| Gross unrealized losses-USGovernment Agencies Debt Securities | 59,677 | 57,269 | 59,178 | NaN |
| Fair value-USGovernment Agencies Debt Securities | 253,864 | 256,272 | 254,362 | NaN |
| Gross unrealized gains-Municipal Bonds | 277 | 451 | 458 | NaN |
| Gross unrealized losses-Municipal Bonds | 2,561 | 2,012 | 2,283 | NaN |
| Fair value-Municipal Bonds | 136,833 | 142,631 | 153,945 | NaN |
| Gross unrealized gains-Residential Mortgage Backed Securities | 3,964 | 7,503 | 5,421 | NaN |
| Gross unrealized losses-Residential Mortgage Backed Securities | 492,262 | 491,124 | 505,165 | NaN |
| Fair value-Residential Mortgage Backed Securities | 2,125,616 | 2,183,750 | 2,224,698 | NaN |
| Gross unrealized gains-Commercial Mortgage Backed Securities | 26 | 72 | 65 | NaN |
| Gross unrealized losses-Commercial Mortgage Backed Securities | 91 | 92 | 102 | NaN |
| Fair value-Commercial Mortgage Backed Securities | 6,204 | 6,273 | 6,278 | NaN |
| Gross unrealized gains-Collateralized Mortgage Obligations | 450 | 836 | 980 | NaN |
| Gross unrealized losses-Collateralized Mortgage Obligations | 17,551 | 16,989 | 17,400 | NaN |
| Fair value-Collateralized Mortgage Obligations | 151,489 | 161,518 | 171,803 | NaN |
| Gross unrealized gains-Corporate And Other | 0 | 2 | 26 | NaN |
| Gross unrealized losses-Corporate And Other | 259 | 396 | 653 | NaN |
| Fair value-Corporate And Other | 28,774 | 34,703 | 49,884 | NaN |
| Amortized cost | 3,270,464 | 3,344,165 | 3,438,801 | NaN |
| Less allowance for credit losses | 257 | 260 | 395 | NaN |
| Held-to-maturity securities, at amortized cost, net of allowance for credit losses of 257, 260 and 446 at march31, 2026, december31, 2025 and march31, 2025, respectively (2.7 billion, 2.8 billion and 2.9 billion fair value at march31, 2026, december31, 2025 and march31, 2025, respectively) | 3,270,207 | 3,343,905 | 3,438,406 | 3,502,186 |
| Trading account securities | NaN | 0 | 0 | 0 |
| Equity securities with readily determinable fair value | 63,786 | 63,770 | 63,445 | 273,722 |
| Federal home loan bank and federal reserve bank stock | 292,044 | 291,881 | 282,755 | 282,087 |
| Brokerage customer receivables | NaN | 0 | 0 | 0 |
| Mortgage loans held-for-sale, at fair value | 383,405 | 340,745 | 333,883 | 299,606 |
| Loans, net of unearned income | 54,071,292 | 53,105,101 | 52,063,482 | 51,041,679 |
| Allowance for loan losses | 390,651 | 379,283 | 386,622 | 391,654 |
| Net loans | 53,680,641 | 52,725,818 | 51,676,860 | 50,650,025 |
| Premises, software and equipment, net | 777,603 | 781,611 | 775,425 | 776,324 |
| Lease investments, net | 362,766 | 360,646 | 301,000 | 289,768 |
| Accrued interest receivable and other assets | 1,596,617 | 1,617,682 | 1,614,674 | 1,610,025 |
| Receivable on unsettled securities sales | 0 | 835,275 | 978,209 | 240,039 |
| Goodwill | 797,658 | 797,960 | 797,639 | 798,144 |
| Other acquisition-related intangible assets | 93,040 | 97,999 | 105,297 | 110,495 |
| Total assets | 72,157,433 | 71,142,046 | 69,629,638 | 68,983,318 |
| Non-interest-bearing | 12,112,891 | 11,423,701 | 10,952,146 | 10,877,166 |
| Interest-bearing | 46,801,491 | 46,293,490 | 45,759,235 | 44,939,645 |
| Total deposits | 58,914,382 | 57,717,191 | 56,711,381 | 55,816,811 |
| Federal home loan bank advances | 3,451,309 | 3,451,309 | 3,151,309 | 3,151,309 |
| Payable on unsettled securities sales | NaN | NaN | NaN | 39,105 |
| Other borrowings | 340,647 | 477,966 | 579,328 | 625,392 |
| Subordinated notes | 298,717 | 298,636 | 298,536 | 298,458 |
| Junior subordinated debentures | 253,566 | 253,566 | 253,566 | 253,566 |
| Accrued interest payable and other liabilities | 1,520,712 | 1,684,663 | 1,589,761 | 1,572,981 |
| Total liabilities | 64,779,333 | 63,883,331 | 62,583,881 | 61,757,622 |
| Preferred stock, no par value 20,000,000 shares authorized-Series DPreferred Stock | 0 | 0 | 0 | 125,000 |
| Preferred stock, no par value 20,000,000 shares authorized-Series EPreferred Stock | 0 | 0 | 0 | 287,500 |
| Preferred stock, no par value 20,000,000 shares authorized-Series FPreferred Stock | 425,000 | 425,000 | 425,000 | 425,000 |
| Common stock, no par value 1.00 stated value 100,000,000 shares authorized at march31, 2026, december31, 2025 and march31, 2025 67,563,372 shares issued at march31, 2026, 67,062,182 shares issued at december31, 2025 and 67,006,594 shares issued at march31, 2025 | 67,563 | 67,062 | 67,042 | 67,025 |
| Surplus | 2,546,754 | 2,534,024 | 2,521,306 | 2,495,637 |
| Treasury stock, at cost, 126,072 shares at march31, 2026, 87,269 shares at december31, 2025, and 87,269 shares at march31, 2025 | 13,970 | 9,156 | 9,150 | 9,156 |
| Retained earnings | 4,719,561 | 4,537,539 | 4,356,367 | 4,200,923 |
| Accumulated other comprehensive loss | -366,808 | -295,754 | -314,808 | -366,233 |
| Total shareholders equity | 7,378,100 | 7,258,715 | 7,045,757 | 7,225,696 |
| Total liabilities and shareholders equity | 72,157,433 | 71,142,046 | 69,629,638 | 68,983,318 |
WINTRUST FINANCIAL CORP (WTFC)
WINTRUST FINANCIAL CORP (WTFC)