Prosperity Bancshares, Inc.
US ˙ NYSE ˙ US7436061052

SecurityPB / Prosperity Bancshares, Inc.
InstitutionUBS Group AG
Latest Disclosed Ownership811,342 shares
Latest Disclosed Value $ 54,505,955
UBS Group AG reports 25.99% increase in ownership of PB / Prosperity Bancshares, Inc.

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 811,342 shares of Prosperity Bancshares, Inc. (US:PB) valued at $54,505,956 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 643,964 shares of Prosperity Bancshares, Inc.. This represents a change in shares of 25.99% during the quarter. The current value of the position is $55,779,762 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)
2026-05-05 2026-03-31 13F PROSPERITY BANCSHARES COM 743606105 811,342 167,378 25.99 54,506 22.47 0.0015
2026-01-29 2025-12-31 13F PROSPERITY BANCSHARES COM 743606105 643,964 288,862 81.35 44,504 88.89 0.0013
2025-11-13 2025-09-30 13F PROSPERITY BANCSHARES COM 743606105 355,102 -73,543 -17.16 23,561 -21.75 0.0037
2025-08-14 2025-06-30 13F PROSPERITY BANCSHARES COM 743606105 428,645 205,986 92.51 30,108 89.47 0.0052
2025-05-13 2025-03-31 13F PROSPERITY BANCSHARES COM 743606105 222,659 40,940 22.53 15,891 16.06 0.0029
2025-02-14 2024-12-31 13F PROSPERITY BANCSHARES COM 743606105 181,719 111,618 159.22 13,693 171.02 0.0025
2024-11-14 2024-09-30 13F PROSPERITY BANCSHARES COM 743606105 70,101 -16,997 -19.51 5,052 -5.13 0.0011
2024-08-14 2024-06-30 13F PROSPERITY BANCSHARES COM 743606105 87,098 47,399 119.40 5,325 103.94 0.0013
2024-05-13 2024-03-31 13F PROSPERITY BANCSHARES COM 743606105 39,699 28,397 251.26 2,611 241.31 0.0007
2024-02-09 2023-12-31 13F PROSPERITY BANCSHARES COM 743606105 11,302 -73,695 -86.70 765 -83.51 0.0002
2023-11-09 2023-09-30 13F PROSPERITY BANCSHARES COM 743606105 84,997 38,506 82.82 4,639 76.72 0.0016
2023-08-11 2023-06-30 13F PROSPERITY BANCSHARES COM 743606105 46,491 -8,621 -15.64 2,626 -22.57 0.0009
2023-05-12 2023-03-31 13F PROSPERITY BANCSHARES COM 743606105 55,112 9,738 21.46 3,390 2.82 0.0012
2023-02-08 2022-12-31 13F PROSPERITY BANCSHARES COM 743606105 45,374 13,368 41.77 3,298 54.50 0.0012
2022-11-10 2022-09-30 13F PROSPERITY BANCSHARES COM 743606105 32,006 -23,439 -42.27 2,134 -43.63 0.0009
2022-08-10 2022-06-30 13F PROSPERITY BANCSHARES COM 743606105 55,445 6,705 13.76 3,786 11.95 0.0016
2022-05-16 2022-03-31 13F PROSPERITY BANCSHARES COM 743606105 48,740 10,078 26.07 3,382 21.00 0.0011
2022-02-14 2021-12-31 13F PROSPERITY BANCSHARES COM 743606105 38,662 -66,238 -63.14 2,795 -62.54 0.0008
2021-11-15 2021-09-30 13F PROSPERITY BANCSHARES COM 743606105 104,900 -55,821 -34.73 7,461 -35.35 0.0023
2021-08-13 2021-06-30 13F PROSPERITY BANCSHARES COM 743606105 160,721 72,420 82.01 11,540 74.53 0.0037
2021-05-12 2021-03-31 13F PROSPERITY BANCSHARES COM 743606105 88,301 1,748 2.02 6,612 10.14 0.0022
2021-02-11 2020-12-31 13F PROSPERITY BANCSHARES COM 743606105 86,553 -15,770 -15.41 6,003 13.20 0.0020
2020-11-12 2020-09-30 13F PROSPERITY BANCSHARES COM 743606105 102,323 89,818 718.26 5,303 613.73 0.0020
2020-07-31 2020-06-30 13F PROSPERITY BANCSHARES COM 743606105 12,505 5,351 74.80 743 115.99 0.0003
2020-05-01 2020-03-31 13F PROSPERITY BANCSHARES COM 743606105 7,154 -35,577 -83.26 344 -88.80 0.0002
2020-02-14 2019-12-31 13F PROSPERITY BANCSHARES COM 743606105 42,731 33,428 359.32 3,072 366.87 0.0011
2019-11-14 2019-09-30 13F PROSPERITY BANCSHARES COM 743606105 9,303 124 1.35 658 8.58 0.0003
2019-08-14 2019-06-30 13F PROSPERITY BANCSHARES COM 743606105 9,179 -23,060 -71.53 606 -72.78 0.0002
2019-05-14 2019-03-31 13F PROSPERITY BANCSHARES COM 743606105 32,239 2,683 9.08 2,226 20.91 0.0009
2019-02-14 2018-12-31 13F PROSPERITY BANCSHARES COM 743606105 29,556 -4,566 -13.38 1,841 -22.19 0.0008
2018-11-14 2018-09-30 13F PROSPERITY BANCSHARES COM 743606105 34,122 23,176 211.73 2,366 215.89 0.0009
2018-08-14 2018-06-30 13F PROSPERITY BANCSHARES COM 743606105 10,946 -561 -4.88 749 -10.41 0.0003
2018-05-15 2018-03-31 13F PROSPERITY BANCSHARES COM 743606105 11,507 294 2.62 836 6.36 0.0004
2018-02-14 2017-12-31 13F PROSPERITY BANCSHARES COM 743606105 11,213 -5,014 -30.90 786 -26.27 0.0003
2017-11-14 2017-09-30 13F PROSPERITY BANCSHARES COM 743606105 16,227 -5,272 -24.52 1,066 -22.81 0.0005
2017-11-14 2017-06-30 13F/A-1 PROSPERITY BANCSHARES COM 743606105 21,499 -1,489 -6.48 1,381 -13.85 0.0007
2017-08-14 2017-06-30 13F PROSPERITY BANCSHARES COM 743606105 21,499 -1,489 1,381
2017-11-14 2017-03-31 13F/A-1 PROSPERITY BANCSHARES COM 743606105 22,988 -11,189 -32.74 1,603 -34.65 0.0009
2017-05-12 2017-03-31 13F PROSPERITY BANCSHARES COM 743606105 22,988 -11,189 1,603
2017-02-14 2016-12-31 13F PROSPERITY BANCSHARES COM 743606105 34,177 22,656 196.65 2,453 288.13 0.0014
2016-11-14 2016-09-30 13F PROSPERITY BANCSHARES COM 743606105 11,521 -1,431 -11.05 632 -4.24 0.0004
2016-08-12 2016-06-30 13F PROSPERITY BANCSHARES COM 743606105 12,952 -234 -1.77 660 7.84 0.0004
2016-05-12 2016-03-31 13F PROSPERITY BANCSHARES COM 743606105 13,186 -6,180 -31.91 612 -33.98 0.0004
2016-02-16 2015-12-31 13F PROSPERITY BANCSHARES COM 743606105 19,366 641 3.42 927 0.76 0.0006
2015-11-13 2015-09-30 13F PROSPERITY BANCSHARES COM 743606105 18,725 -1,741 -8.51 920 -22.17 0.0007
2015-08-14 2015-06-30 13F PROSPERITY BANCSHARES COM 743606105 20,466 8,627 72.87 1,182 90.34 0.0008
2015-05-14 2015-03-31 13F PROSPERITY BANCSHARES COM 743606105 11,839 -1,994 -14.41 621 -18.93 0.0004
2015-02-17 2014-12-31 13F PROSPERITY BANCSHARES COM 743606105 13,833 13,833 766 0.0005
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.