Whitestone REIT
US ˙ NYSE ˙ US9660842041

SecurityWSR / Whitestone REIT
InstitutionUBS Group AG
Latest Disclosed Ownership23,151 shares
Latest Disclosed Value $ 373,889
UBS Group AG reports 72.54% decrease in ownership of WSR / Whitestone REIT

On May 5, 2026 - UBS Group AG filed a 13F-HR form disclosing ownership of 23,151 shares of Whitestone REIT (US:WSR) valued at $373,889 USD as of March 31, 2026. The entity filed a previous 13F-HR on January 29, 2026 disclosing 84,321 shares of Whitestone REIT. This represents a change in shares of -72.54% during the quarter. The current value of the position is $441,258 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 WHITESTONE REIT COM 966084204 23,151 -61,170 -72.54 374 -68.15 0.0000
2026-01-29 2025-12-31 13F WHITESTONE REIT COM 966084204 84,321 -87 -0.10 1,171 13.03 0.0000
2025-11-13 2025-09-30 13F WHITESTONE REIT COM 966084204 84,408 1,091 1.31 1,037 -0.29 0.0002
2025-08-14 2025-06-30 13F WHITESTONE REIT COM 966084204 83,317 9,438 12.77 1,040 -3.44 0.0002
2025-05-13 2025-03-31 13F WHITESTONE REIT COM 966084204 73,879 21,344 40.63 1,076 44.62 0.0002
2025-02-14 2024-12-31 13F WHITESTONE REIT COM 966084204 52,535 18,143 52.75 744 60.00 0.0001
2024-11-14 2024-09-30 13F WHITESTONE REIT COM 966084204 34,392 -5,762 -14.35 465 -12.92 0.0001
2024-08-14 2024-06-30 13F WHITESTONE REIT COM 966084204 40,154 -7,471 -15.69 534 -10.55 0.0001
2024-05-13 2024-03-31 13F WHITESTONE REIT COM 966084204 47,625 -7,891 -14.21 598 -12.46 0.0001
2024-02-09 2023-12-31 13F WHITESTONE REIT COM 966084204 55,516 35,602 178.78 682 257.07 0.0002
2023-11-09 2023-09-30 13F WHITESTONE REIT COM 966084204 19,914 -22,166 -52.68 192 -53.19 0.0001
2023-08-11 2023-06-30 13F WHITESTONE REIT COM 966084204 42,080 13,893 49.29 408 57.53 0.0001
2023-05-12 2023-03-31 13F WHITESTONE REIT COM 966084204 28,187 1,173 4.34 259 -0.38 0.0001
2023-02-08 2022-12-31 13F WHITESTONE REIT COM 966084204 27,014 18,067 201.93 260 242.11 0.0001
2022-11-10 2022-09-30 13F WHITESTONE REIT COM 966084204 8,947 5,556 163.85 76 111.11 0.0000
2022-08-10 2022-06-30 13F WHITESTONE REIT COM 966084204 3,391 -15,023 -81.58 36 -85.19 0.0000
2022-05-16 2022-03-31 13F WHITESTONE REIT COM 966084204 18,414 -44,914 -70.92 243 -62.15 0.0001
2022-02-14 2021-12-31 13F WHITESTONE REIT COM 966084204 63,328 24,195 61.83 642 68.06 0.0002
2021-11-15 2021-09-30 13F WHITESTONE REIT COM 966084204 39,133 13,868 54.89 382 83.65 0.0001
2021-08-13 2021-06-30 13F WHITESTONE REIT COM 966084204 25,265 -8,099 -24.27 208 -35.80 0.0001
2021-05-12 2021-03-31 13F WHITESTONE REIT COM 966084204 33,364 -2,759 -7.64 324 12.50 0.0001
2021-02-11 2020-12-31 13F WHITESTONE REIT COM 966084204 36,123 22,744 170.00 288 260.00 0.0001
2020-11-12 2020-09-30 13F WHITESTONE REIT COM 966084204 13,379 -9,003 -40.22 80 -50.62 0.0000
2020-07-31 2020-06-30 13F WHITESTONE REIT COM 966084204 22,382 -16,600 -42.58 162 -33.06 0.0001
2020-05-01 2020-03-31 13F WHITESTONE REIT COM 966084204 38,982 -67,277 -63.31 242 -83.28 0.0001
2020-02-14 2019-12-31 13F WHITESTONE REIT COM 966084204 106,259 7,197 7.27 1,447 6.16 0.0005
2019-11-14 2019-09-30 13F WHITESTONE REIT COM 966084204 99,062 187 0.19 1,363 8.61 0.0005
2019-08-14 2019-06-30 13F WHITESTONE REIT COM 966084204 98,875 27,925 39.36 1,255 47.13 0.0005
2019-05-14 2019-03-31 13F WHITESTONE REIT COM 966084204 70,950 26,385 59.21 853 55.94 0.0004
2019-02-14 2018-12-31 13F WHITESTONE REIT COM 966084204 44,565 -12,961 -22.53 547 -31.45 0.0002
2018-11-14 2018-09-30 13F WHITESTONE REIT COM 966084204 57,526 4,527 8.54 798 20.54 0.0003
2018-08-14 2018-06-30 13F WHITESTONE REIT COM 966084204 52,999 14,041 36.04 662 63.46 0.0003
2018-05-15 2018-03-31 13F WHITESTONE REIT COM 966084204 38,958 -12,750 -24.66 405 -45.64 0.0002
2018-02-14 2017-12-31 13F WHITESTONE REIT COM 966084204 51,708 552 1.08 745 11.53 0.0003
2017-11-14 2017-09-30 13F WHITESTONE REIT COM 966084204 51,156 42,351 480.99 668 518.52 0.0003
2017-11-14 2017-06-30 13F/A-1 WHITESTONE REIT COM 966084204 8,805 -2,131 -19.49 108 -28.48 0.0001
2017-08-14 2017-06-30 13F WHITESTONE REIT COM 966084204 8,805 -2,131 108
2017-11-14 2017-03-31 13F/A-1 WHITESTONE REIT COM 966084204 10,936 -7,056 -39.22 151 -41.70 0.0001
2017-05-12 2017-03-31 13F WHITESTONE REIT COM 966084204 10,936 -7,056 151
2017-02-14 2016-12-31 13F WHITESTONE REIT COM 966084204 17,992 11,939 197.24 259 208.33 0.0001
2016-11-14 2016-09-30 13F WHITESTONE REIT COM 966084204 6,053 2,413 66.29 84 55.56 0.0001
2016-08-12 2016-06-30 13F WHITESTONE REIT COM 966084204 3,640 1,672 84.96 54 125.00 0.0000
2016-05-12 2016-03-31 13F WHITESTONE REIT COM 966084204 1,968 987 100.61 24 100.00 0.0000
2016-02-16 2015-12-31 13F WHITESTONE REIT COM 966084204 981 981 0.00 12 0.0000
2015-05-14 2015-03-31 13F WHITESTONE REIT COM 966084204 0 -4,010 -100.00 0 -100.00
2015-02-17 2014-12-31 13F WHITESTONE REIT COM 966084204 4,010 4,010 61 0.0000
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.