Prosperity Bank: Securities Portfolio
Data as of · Call Report Schedule RC-B How we update
The investment portfolio: what the bank owns, how it is split between available-for-sale and held-to-maturity, and the unrealized gain or loss sitting in it. Unrealized losses on held-to-maturity securities do not run through capital, which is why the ratio to equity is worth watching.
The standout move of Q2 2026 was in Pledged share of securities: 2.66 percentage points higher than in Q1 2026, at 82.88%.
Portfolio size
| Line item | Q2 2026 |
|---|---|
| Total securities | $12.34B |
| Available-for-sale securities | $346.0M |
| Held-to-maturity securities | $11.99B |
| Trading account assets | $286K |
| Municipal securities | $118.2M |
| Securities to total assets | 28.12% |
Portfolio mix
| Line item | Q2 2026 |
|---|---|
| Available-for-sale share of securities | 2.80% |
| Held-to-maturity share of securities | 97.20% |
| Pledged share of securities | 82.88% |
Unrealized gains and losses
| Line item | Q2 2026 |
|---|---|
| Unrealized gain/(loss), available-for-sale | -$319K |
| Unrealized gain/(loss), held-to-maturity | -$891.8M |
| Total unrealized gain/(loss) | -$892.1M |
| Unrealized gain/(loss) to equity | -11.00% |
Carrying value less fair value. A negative figure is an unrealized loss: the position is worth less than the balance sheet carries it at.
Securities earnings
| Line item | Q2 2026 |
|---|---|
| Yield on securities | 2.65% |
| Realized gain/(loss) on securities | -$4.0M |
| Realized gain/(loss), available-for-sale | $0 |
| Realized gain/(loss), held-to-maturity | -$4.0M |
Securities Portfolio trend
Last 12 quarters as filed. Every value plotted here also appears in the tables above.
Negative bars are unrealized losses measured against equity capital.
Securities Portfolio by quarter
| Quarter | Available-for-sale | Held-to-maturity | Unrealized G/(L) to equity | Yield on securities |
|---|---|---|---|---|
| Q3 2023 | $446.2M | $12.75B | -27.30% | 2.07% |
| Q4 2023 | $438.6M | $12.37B | -19.58% | 2.08% |
| Q1 2024 | $315.3M | $11.99B | -21.32% | 2.09% |
| Q2 2024 | $318.6M | $11.38B | -19.19% | 2.05% |
| Q3 2024 | $331.4M | $10.97B | -13.71% | 2.05% |
| Q4 2024 | $337.0M | $10.76B | -18.56% | 2.07% |
| Q1 2025 | $335.8M | $10.46B | -15.88% | 2.10% |
| Q2 2025 | $342.1M | $10.27B | -15.11% | 2.13% |
| Q3 2025 | $332.4M | $9.90B | -12.40% | 2.21% |
| Q4 2025 | $338.2M | $10.28B | -11.43% | 2.19% |
| Q1 2026 | $356.1M | $11.60B | -11.33% | 2.46% |
| Q2 2026 | $346.0M | $11.99B | -11.00% | 2.65% |
Prosperity Bank securities portfolio, all the way back
Securities Portfolio back to 2001 · peer percentiles on every line item · Excel export
Unlock Prosperity Bank, freeSource: Call Report Schedule RC-B, as filed with the FFIEC and standardized by BankRegReports. Dollar amounts are as reported, point-in-time; income statement items are year-to-date through the report date. See the full Prosperity Bank profile, peer group comparison, or how this data updates.
Regulator records: FDIC BankFind (cert 16835) · FFIEC NIC profile (RSSD 664756)