Block, Inc.
US ˙ NYSE ˙ US8522341036

SecurityXYZ / Block, Inc.
InstitutionSei Investments Co
Latest Disclosed Ownership382,590 shares
Latest Disclosed Value $ 24,906,175
Sei Investments Co reports 17.54% decrease in ownership of XYZ / Block, Inc.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 382,590 shares of Block, Inc. (US:XYZ) valued at $24,902,783 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 463,968 shares of Block, Inc.. This represents a change in shares of -17.54% during the quarter. The current value of the position is $26,704,782 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)
2026-02-13 2025-12-31 13F BLOCK CL A 852234103 382,590 -81,378 -17.54 24,906 -25.72 0.0246
2025-11-13 2025-09-30 13F BLOCK CL A 852234103 463,968 7,525 1.65 33,531 8.14 0.0361
2025-08-14 2025-06-30 13F BLOCK CL A 852234103 456,443 103,573 29.35 31,006 61.73 0.0359
2025-05-14 2025-03-31 13F/A-1 BLOCK CL A 852234103 352,870 161,849 84.73 19,171 18.12 0.0247
2025-05-13 2025-03-31 13F BLOCK CL A 852234103 192,045 1,024 15,287 0.0166
2025-02-11 2024-12-31 13F BLOCK CL A 852234103 191,021 -18,763 -8.94 16,230 15.25 0.0208
2024-11-12 2024-09-30 13F BLOCK CL A 852234103 209,784 27,178 14.88 14,084 19.59 0.0183
2024-08-13 2024-06-30 13F BLOCK CL A 852234103 182,606 5,171 2.91 11,776 -21.53 0.0167
2024-05-07 2024-03-31 13F BLOCK CL A 852234103 177,435 -5,103 -2.80 15,007 6.29 0.0220
2024-02-14 2023-12-31 13F BLOCK CL A 852234103 182,538 22,721 14.22 14,119 99.59 0.0227
2023-11-14 2023-09-30 13F BLOCK CL A 852234103 159,817 -153,179 -48.94 7,074 -66.05 0.0127
2023-08-11 2023-06-30 13F BLOCK CL A 852234103 312,996 -48,686 -13.46 20,837 -16.08 0.0363
2023-05-12 2023-03-31 13F BLOCK CL A 852234103 361,682 48,180 15.37 24,829 26.04 0.0461
2023-02-10 2022-12-31 13F BLOCK CL A 852234103 313,502 55,428 21.48 19,701 38.83 0.0438
2022-11-14 2022-09-30 13F BLOCK CL A 852234103 258,074 -6,768 -2.56 14,190 -12.53 0.0317
2022-08-15 2022-06-30 13F BLOCK CL A 852234103 264,842 75,153 39.62 16,222 -36.89 0.0350
2022-05-13 2022-03-31 13F BLOCK CL A 852234103 189,689 -200,456 -51.38 25,703 -59.17 0.0517
2022-02-14 2021-12-31 13F BLOCK CL A 852234103 390,145 17,491 4.69 62,953 -29.55 0.1181
2021-11-12 2021-09-30 13F SQUARE CL A 852234103 372,654 118,882 46.85 89,353 44.49 0.1875
2021-08-06 2021-06-30 13F SQUARE CL A 852234103 253,772 52,211 25.90 61,842 35.17 0.1371
2021-05-12 2021-03-31 13F SQUARE CL A 852234103 201,561 -4,204 -2.04 45,750 2.15 0.1153
2021-02-08 2020-12-31 13F SQUARE CL A 852234103 205,765 120,414 141.08 44,787 223.26 0.1158
2020-12-04 2020-09-30 13F/A-1 SQUARE CL A 852234103 85,351 -20,508 -19.37 13,855 24.57 0.0401
2020-11-06 2020-09-30 13F SQUARE CL A 852234103 88,547 -17,312 14,375 34,611.8039
2020-08-17 2020-06-30 13F/A-1 SQUARE CL A 852234103 105,859 -17,228 -14.00 11,122 73.16 0.0345
2020-08-11 2020-06-30 13F SQUARE CL A 852234103 64,019 -59,068 4,228 11,468.6751
2020-05-14 2020-03-31 13F SQUARE CL A 852234103 123,087 63,164 105.41 6,423 71.33 0.0236
2020-02-06 2019-12-31 13F SQUARE CL A 852234103 59,923 1,099 1.87 3,749 2.52 0.0112
2019-11-12 2019-09-30 13F SQUARE CL A 852234103 58,824 -53,746 -47.74 3,657 -55.28 0.0094
2019-08-14 2019-06-30 13F SQUARE CL A 852234103 112,570 8,591 8.26 8,178 4.86 0.0267
2019-05-15 2019-03-31 13F SQUARE CL A 852234103 103,979 30,624 41.75 7,799 8.32 0.0262
2019-02-13 2018-12-31 13F SQUARE CL A 852234103 73,355 -1,925 -2.56 7,200 -3.34 0.0256
2018-11-08 2018-09-30 13F SQUARE CL A 852234103 75,280 -129,320 -63.21 7,449 -40.93 0.0270
2018-08-03 2018-06-30 13F SQUARE CL A 852234103 204,600 17,011 9.07 12,611 36.65 0.0429
2018-05-11 2018-03-31 13F SQUARE CL A 852234103 187,589 106,642 131.74 9,229 228.79 0.0354
2018-02-08 2017-12-31 13F SQUARE CL A 852234103 80,947 -75,180 -48.15 2,807 -37.59 0.0097
2017-11-06 2017-09-30 13F SQUARE CL A 852234103 156,127 55,848 55.69 4,498 91.24 0.0160
2017-07-31 2017-06-30 13F SQUARE CL A 852234103 100,279 21,522 27.33 2,352 72.94 0.0094
2017-05-05 2017-03-31 13F SQUARE CL A 852234103 78,757 1,692 2.20 1,360 29.40 0.0060
2017-02-02 2016-12-31 13F SQUARE CL A 852234103 77,065 29,264 61.22 1,051 88.35 0.0051
2016-11-04 2016-09-30 13F SQUARE CL A 852234103 47,801 47,516 16,672.28 558 18,500.00 0.0028
2016-08-11 2016-06-30 13F SQUARE CL A 852234103 285 0 0.00 3 -25.00 0.0000
2016-05-10 2016-03-31 13F/A-1 SQUARE CL A 852234103 285 285 4 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.