SL Green Realty Corp.
US ˙ NYSE ˙ US78440X8873

SecuritySLG / SL Green Realty Corp.
InstitutionSei Investments Co
Latest Disclosed Ownership255,473 shares
Latest Disclosed Value $ 11,718,609
Sei Investments Co reports 359.76% increase in ownership of SLG / SL Green Realty Corp.

On February 13, 2026 - Sei Investments Co filed a 13F-HR form disclosing ownership of 255,473 shares of SL Green Realty Corp. (US:SLG) valued at $11,718,547 USD as of December 31, 2025. The entity filed a previous 13F-HR on November 13, 2025 disclosing 55,566 shares of SL Green Realty Corp.. This represents a change in shares of 359.76% during the quarter. The current value of the position is $11,371,103 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 SL GREEN RLTY COM 78440X887 255,473 199,907 359.76 11,719 252.63 0.0116
2025-11-13 2025-09-30 13F SL GREEN RLTY COM 78440X887 55,566 -9,745 -14.92 3,323 -17.79 0.0036
2025-08-14 2025-06-30 13F SL GREEN RLTY COM 78440X887 65,311 6,915 11.84 4,043 19.98 0.0047
2025-05-14 2025-03-31 13F/A-1 SL GREEN RLTY COM 78440X887 58,396 -25,759 -30.61 3,369 -41.05 0.0043
2025-05-13 2025-03-31 13F SL GREEN RLTY COM 78440X887 68,436 -15,719 4,491 0.0049
2025-02-11 2024-12-31 13F SL GREEN RLTY COM 78440X887 84,155 34,483 69.42 5,716 65.32 0.0073
2024-11-12 2024-09-30 13F SL GREEN RLTY COM 78440X887 49,672 35,537 251.41 3,458 332.13 0.0045
2024-08-13 2024-06-30 13F SL GREEN RLTY COM 78440X887 14,135 -13,335 -48.54 801 -47.16 0.0011
2024-05-07 2024-03-31 13F SL GREEN RLTY COM 78440X887 27,470 -23,614 -46.23 1,514 -34.37 0.0022
2024-02-14 2023-12-31 13F SL GREEN RLTY COM 78440X887 51,084 17,528 52.24 2,307 84.41 0.0037
2023-11-14 2023-09-30 13F SL GREEN RLTY COM 78440X887 33,556 18,220 118.81 1,252 171.96 0.0022
2023-08-11 2023-06-30 13F SL GREEN RLTY COM 78440X887 15,336 15,336 461 0.0008
2023-05-12 2023-03-31 13F SL GREEN RLTY COM 78440X887 0 -60,660 -100.00 0 -100.00
2023-02-10 2022-12-31 13F SL GREEN RLTY COM 78440X887 60,660 -1,619 -2.60 2,045 -18.23 0.0045
2022-11-14 2022-09-30 13F SL GREEN RLTY COM 78440X887 62,279 62,279 2,501 0.0056
2022-05-13 2022-03-31 13F SL GREEN RLTY COM 78440X804 0 -3,815 -100.00 0 -100.00
2022-02-14 2021-12-31 13F SL GREEN RLTY COM 78440X804 3,815 -1,128 -22.82 295 -18.06 0.0006
2021-11-12 2021-09-30 13F SL GREEN RLTY COM 78440X804 4,943 -38,611 -88.65 360 -89.68 0.0008
2021-08-06 2021-06-30 13F SL GREEN RLTY COM 78440X804 43,554 43,554 3,487 0.0077
2021-05-12 2021-03-31 13F SL GREEN RLTY COM 78440X101 0 -42,111 -100.00 0 -100.00
2021-02-08 2020-12-31 13F SL GREEN RLTY COM 78440X101 42,111 -58,446 -58.12 2,494 -46.33 0.0064
2020-12-04 2020-09-30 13F/A-1 SL GREEN RLTY COM 78440X101 100,557 -23,461 -18.92 4,647 -24.06 0.0135
2020-11-06 2020-09-30 13F SL GREEN RLTY COM 78440X101 104,239 -19,779 4,818 11,600.6728
2020-08-17 2020-06-30 13F/A-1 SL GREEN RLTY COM 78440X101 124,018 23,119 22.91 6,119 41.15 0.0190
2020-08-11 2020-06-30 13F SL GREEN RLTY COM 78440X101 106,397 5,498 8,867 24,052.2095
2020-05-14 2020-03-31 13F SL GREEN RLTY COM 78440X101 100,899 7,036 7.50 4,335 -49.81 0.0159
2020-02-06 2019-12-31 13F SL GREEN RLTY COM 78440X101 93,863 5,306 5.99 8,638 19.38 0.0258
2019-11-12 2019-09-30 13F SL GREEN RLTY COM 78440X101 88,557 12,253 16.06 7,236 17.98 0.0185
2019-08-14 2019-06-30 13F SL GREEN RLTY COM 78440X101 76,304 2,480 3.36 6,133 -7.62 0.0200
2019-05-15 2019-03-31 13F SL GREEN RLTY COM 78440X101 73,824 3,282 4.65 6,639 -1.60 0.0223
2019-02-13 2018-12-31 13F SL GREEN RLTY COM 78440X101 70,542 7,232 11.42 6,747 9.26 0.0240
2018-11-08 2018-09-30 13F SL GREEN RLTY COM 78440X101 63,310 -3,105 -4.68 6,175 -7.50 0.0224
2018-08-03 2018-06-30 13F SL GREEN RLTY COM 78440X101 66,415 14,673 28.36 6,676 33.25 0.0227
2018-05-11 2018-03-31 13F SL GREEN RLTY COM 78440X101 51,742 -6,319 -10.88 5,010 -14.49 0.0192
2018-02-08 2017-12-31 13F SL GREEN RLTY COM 78440X101 58,061 -119,752 -67.35 5,859 -67.48 0.0203
2017-11-06 2017-09-30 13F SL GREEN RLTY COM 78440X101 177,813 27,516 18.31 18,017 13.30 0.0640
2017-07-31 2017-06-30 13F SL GREEN RLTY COM 78440X101 150,297 -50,175 -25.03 15,902 -25.60 0.0634
2017-05-05 2017-03-31 13F SL GREEN RLTY COM 78440X101 200,472 34,669 20.91 21,375 19.86 0.0937
2017-02-02 2016-12-31 13F SL GREEN RLTY COM 78440X101 165,803 62,843 61.04 17,833 60.22 0.0864
2016-11-04 2016-09-30 13F SL GREEN RLTY COM 78440X101 102,960 18,152 21.40 11,130 23.27 0.0565
2016-08-11 2016-06-30 13F SL GREEN RLTY COM 78440X101 84,808 -12,305 -12.67 9,029 -4.03 0.0542
2016-05-10 2016-03-31 13F/A-1 SL GREEN RLTY COM 78440X101 97,113 6,070 6.67 9,408 -8.54 0.0585
2016-02-03 2015-12-31 13F SL GREEN RLTY COM 78440X101 91,043 33,829 59.13 10,286 66.22 0.0627
2015-11-02 2015-09-30 13F/A-1 SL GREEN RLTY COM 78440X101 57,214 -10,134 -15.05 6,188 -16.38 0.0568
2015-10-30 2015-09-30 13F DIREXION SHS ETF TR COM 78440X101 57,214 6,189
2015-08-07 2015-06-30 13F/A-1 SL GREEN RLTY COM 78440X101 67,348 -4,459 -6.21 7,400 -19.74 0.0669
2015-08-04 2015-06-30 13F SL GREEN RLTY COM 78440X101 67,348 -4,459 7,400 0.0669
2015-05-14 2015-03-31 13F/A-1 SL GREEN RLTY COM 78440X101 71,807 2,677 3.87 9,220 12.08 0.0801
2015-05-01 2015-03-31 13F SL GREEN RLTY COM 78440X101 71,807 9,220
2015-02-10 2014-12-31 13F SL GREEN RLTY COM 78440X101 69,130 69,130 8,226 0.0727
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.