Prosperity Bancshares, Inc.
US ˙ NYSE ˙ US7436061052

SecurityPB / Prosperity Bancshares, Inc.
InstitutionMorgan Stanley
Latest Disclosed Ownership3,226,327 shares
Latest Disclosed Value $ 216,744,760
Morgan Stanley reports 12.32% decrease in ownership of PB / Prosperity Bancshares, Inc.

On May 15, 2026 - Morgan Stanley filed a 13F-HR form disclosing ownership of 3,226,327 shares of Prosperity Bancshares, Inc. (US:PB) valued at $216,744,648 USD as of March 31, 2026. The entity filed a previous 13F-HR/A on May 27, 2026 disclosing 3,679,871 shares of Prosperity Bancshares, Inc.. This represents a change in shares of -12.32% during the quarter. The current value of the position is $221,809,981 USD.

Institutional Ownership: 13F and NPORT Filings

The Security and Class in the table below are shown exactly as filed by the investor. We do our best to track continuity of investments through acquisitions, and this will be reflected in the table as changes in names. In addition to descriptive data, performance of the investment is shown over time. To calculate quarterly performance, we first calculate cost basis of the shares purchased during the quarter, then use that to calculate gross profit. Quarterly return is Gross Profit / Starting Portfolio value.

Note that cost basis is calculated and stored in thousands, so small quarterly changes in shares frequently result in a cost basis of zero.

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Disclosed Equity Positions (from 13F/NPORT Filings)
File
Date		 Effective
Date		Form Security Class ID Avg Price
Paid (Est)		 Reported
Shares		 ΔShares ΔShares
(%)		 Reported
Value
(x1000)		 ΔValue
(%)		 Alloc
(%)		 ΔAlloc ΔAlloc (%) Cost Basis
(x1000)		 Unrealized
Gain/Loss
(x1000)
2026-05-15 2026-03-31 13F PROSPERITY BANCSHARES COM 743606105 3,226,327 -453,544 -12.32 216,745 -14.77 0.0131
2026-05-27 2025-12-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 3,679,871 15,192 0.41 254,316 4.59 0.0152
2026-02-13 2025-12-31 13F PROSPERITY BANCSHARES COM 743606105 3,679,871 15,192 254,316 0.0152
2026-05-27 2025-09-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 3,664,679 329,831 9.89 243,152 3.80 0.0147
2025-11-14 2025-09-30 13F PROSPERITY BANCSHARES COM 743606105 3,664,679 329,831 243,152 0.0147
2025-08-15 2025-06-30 13F PROSPERITY BANCSHARES COM 743606105 3,334,848 476,519 16.67 234,240 14.82 0.0153
2025-05-15 2025-03-31 13F PROSPERITY BANCSHARES COM 743606105 2,858,329 -93,447 -3.17 203,999 -8.28 0.0146
2025-05-15 2024-12-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 2,951,776 138,299 4.92 222,417 9.69 0.0156
2025-02-14 2024-12-31 13F PROSPERITY BANCSHARES COM 743606105 2,951,776 138,299 222,417 0.0156
2025-05-14 2024-09-30 13F/A-2 PROSPERITY BANCSHARES COM 743606105 2,813,477 104,388 3.85 202,768 22.42 0.0147
2025-02-14 2024-09-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 2,813,477 104,388 202,768 0.0147
2024-11-14 2024-09-30 13F PROSPERITY BANCSHARES COM 743606105 2,813,477 104,388 202,768 0.0017
2025-05-14 2024-06-30 13F/A-2 PROSPERITY BANCSHARES COM 743606105 2,709,089 198,677 7.91 165,634 0.30 0.0128
2024-10-17 2024-06-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 2,709,089 198,677 165,634 0.0128
2024-08-14 2024-06-30 13F PROSPERITY BANCSHARES COM 743606105 2,709,089 198,677 165,634 0.0128
2024-10-17 2024-03-31 13F/A-2 PROSPERITY BANCSHARES COM 743606105 2,510,412 94,835 3.93 165,135 0.93 0.0132
2024-08-16 2024-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 2,510,412 94,835 165,135 0.0016
2024-05-15 2024-03-31 13F PROSPERITY BANCSHARES COM 743606105 2,510,412 94,835 165,135 0.0133
2024-08-16 2023-12-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 2,415,577 -28,437 -1.16 163,607 22.65 0.0144
2024-02-13 2023-12-31 13F PROSPERITY BANCSHARES COM 743606105 2,415,577 -28,437 163,607 0.0144
2023-11-15 2023-09-30 13F PROSPERITY BANCSHARES COM 743606105 2,444,014 -28,914 -1.17 133,394 -4.49 0.0136
2023-08-14 2023-06-30 13F PROSPERITY BANCSHARES COM 743606105 2,472,928 -38,893 -1.55 139,671 -9.61 0.0138
2023-05-15 2023-03-31 13F PROSPERITY BANCSHARES COM 743606105 2,511,821 121,745 5.09 154,527 -11.04 0.0166
2023-02-14 2022-12-31 13F PROSPERITY BANCSHARES COM 743606105 2,390,076 1,828,204 325.38 173,711 363.65 0.0197
2022-11-14 2022-09-30 13F PROSPERITY BANCSHARES COM 743606105 561,872 2,092 0.37 37,466 -1.96 0.0051
2022-10-27 2022-06-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 559,780 403,706 258.66 38,216 252.90 0.0050
2022-08-15 2022-06-30 13F PROSPERITY BANCSHARES COM 743606105 559,780 403,706 38,216 0.0010
2022-10-27 2022-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 156,074 46,720 42.72 10,829 36.97 0.0015
2022-05-13 2022-03-31 13F PROSPERITY BANCSHARES COM 743606105 156,074 46,720 10,829 0.0015
2022-02-14 2021-12-31 13F PROSPERITY BANCSHARES COM 743606105 109,354 48,390 79.37 7,906 82.33 0.0010
2021-11-15 2021-09-30 13F PROSPERITY BANCSHARES COM 743606105 60,964 11,397 22.99 4,336 21.80 0.0006
2021-08-23 2021-06-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 49,567 -122,149 -71.13 3,560 -72.32 0.0005
2021-08-16 2021-06-30 13F PROSPERITY BANCSHARES COM 743606105 49,567 -122,149 3,560 0.0001
2021-05-17 2021-03-31 13F PROSPERITY BANCSHARES COM 743606105 171,716 64,501 60.16 12,859 72.93 0.0019
2021-02-16 2020-12-31 13F PROSPERITY BANCSHARES COM 743606105 107,215 72,876 212.23 7,436 317.75 0.0011
2020-11-13 2020-09-30 13F PROSPERITY BANCSHARES COM 743606105 34,339 -204,668 -85.63 1,780 -87.46 0.0003
2020-08-14 2020-06-30 13F PROSPERITY BANCSHARES COM 743606105 239,007 78,662 49.06 14,193 83.44 0.0031
2020-05-26 2020-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 160,345 -60,477 -27.39 7,737 -51.26 0.0021
2020-05-15 2020-03-31 13F PROSPERITY BANCSHARES COM 743606105 160,345 -60,477 7,737 594.3629
2020-02-14 2019-12-31 13F PROSPERITY BANCSHARES COM 743606105 220,822 203,997 1,212.46 15,875 1,236.28 0.0037
2019-11-14 2019-09-30 13F PROSPERITY BANCSHARES COM 743606105 16,825 4,454 36.00 1,188 45.41 0.0003
2019-08-14 2019-06-30 13F PROSPERITY BANCSHARES COM 743606105 12,371 -2,075 -14.36 817 -18.14 0.0002
2019-05-15 2019-03-31 13F PROSPERITY BANCSHARES COM 743606105 14,446 -7,087 -32.91 998 -25.63 0.0003
2019-02-14 2018-12-31 13F PROSPERITY BANCSHARES COM 743606105 21,533 -51,725 -70.61 1,342 -73.59 0.0004
2019-04-23 2018-09-30 13F/A-2 PROSPERITY BANCSHARES COM 743606105 73,258 -21,821 -22.95 5,081 -21.84 0.0013
2018-11-20 2018-09-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 73,258 0 5,081 0.0013
2018-11-14 2018-09-30 13F PROSPERITY BANCSHARES COM 743606105 73,258 -21,821 5,081
2019-04-23 2018-06-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 95,079 -364,672 -79.32 6,501 -80.53 0.0018
2018-08-14 2018-06-30 13F PROSPERITY BANCSHARES COM 743606105 95,079 -364,672 6,501
2019-04-23 2018-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 459,751 110,057 31.47 33,392 36.27 0.0093
2018-05-14 2018-03-31 13F PROSPERITY BANCSHARES COM 743606105 459,751 110,057 33,392
2019-04-23 2017-12-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 349,694 189,516 118.32 24,504 132.73 0.0067
2018-02-14 2017-12-31 13F PROSPERITY BANCSHARES COM 743606105 349,694 189,516 24,504
2017-11-14 2017-09-30 13F PROSPERITY BANCSHARES COM 743606105 160,178 -198,928 -55.40 10,529 -54.36 0.0032
2017-08-11 2017-06-30 13F PROSPERITY BANCSHARES COM 743606105 359,106 128,958 56.03 23,069 43.78 0.0070
2017-05-22 2017-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 230,148 -70,946 -23.56 16,045 -25.76 0.0049
2017-05-12 2017-03-31 13F PROSPERITY BANCSHARES COM 743606105 230,148 16,045
2017-02-22 2016-12-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 301,094 222,882 284.97 21,612 403.42 0.0071
2017-02-13 2016-12-31 13F PROSPERITY BANCSHARES COM 743606105 301,094 21,612
2016-11-10 2016-09-30 13F PROSPERITY BANCSHARES COM 743606105 78,212 12,889 19.73 4,293 28.92 0.0015
2016-08-12 2016-06-30 13F PROSPERITY BANCSHARES COM 743606105 65,323 50,213 332.32 3,330 374.36 0.0012
2016-05-12 2016-03-31 13F PROSPERITY BANCSHARES COM 743606105 15,110 -79,523 -84.03 702 -84.50 0.0003
2016-02-09 2015-12-31 13F PROSPERITY BANCSHARES COM 743606105 94,633 -7,860 -7.67 4,529 -10.01 0.0016
2016-02-08 2015-09-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 102,493 -25,921 -20.19 5,033 -32.11 0.0019
2015-11-09 2015-09-30 13F PROSPERITY BANCSHARES COM 743606105 102,493 5,033
2015-08-12 2015-06-30 13F PROSPERITY BANCSHARES COM 743606105 128,414 -12,965 -9.17 7,414 -0.07 0.0026
2015-05-14 2015-03-31 13F PROSPERITY BANCSHARES COM 743606105 141,379 -192,139 -57.61 7,419 -59.82 0.0027
2015-02-13 2014-12-31 13F PROSPERITY BANCSHARES COM 743606105 333,518 245,864 280.49 18,463 268.45 0.0068
2014-12-16 2014-09-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 87,654 -80,712 -47.94 5,011 -55.01 0.0019
2014-11-14 2014-09-30 13F PROSPERITY BANCSHARES COM 743606105 87,654 5,011
2014-05-13 2014-03-31 13F PROSPERITY BANCSHARES COM 743606105 168,366 9,374 5.90 11,138 10.51 0.0047
2014-02-13 2013-12-31 13F PROSPERITY BANCSHARES COM 743606105 158,992 141,118 789.52 10,079 812.13 0.0043
2013-11-13 2013-09-30 13F PROSPERITY BANCSHARES INC C COM 743606105 17,874 -9,580 -34.89 1,105 -22.24 0.0005
2013-08-08 2013-06-30 13F PROSPERITY BANCSHARES INC C COM 743606105 27,454 27,454 1,421 0.0007
Legend
Shares
The total number of shares held by the institution at the end of the reporting period (the effective date). This is provided in the filing.
Value
The total value of the shares as of the effective date. This is provided in the filing.
Avg. Share Price
The weighted average share price of the shares held by the institution. We use FIFO accounting to determine this price
Class
This is the security class as indicated by the filer. There are a variety of values for this field. Common values include "EC" = equity common, "EP" - equity preferred
Allocation (%)
The percent of the institution's portfolio that this position represents. This is provided in NPORT filings. For 13F filings, we calculate it.
Change in Allocation
The change in allocation from the prior reporting period. This is calculated as current allocation - prior allocation.
Change in Allocation (%)
The percent change in allocation from the prior reporting period. This is calculated as (current allocation - prior allocation) / prior allocation.
Cost Basis
The total cost of the shares held. This is calculated as reported shares * avg. share price
Unrealized Gain/Loss
This is the market value of the position as of the effective date minus the cost basis.