Columbia Financial, Inc.
US ˙ NasdaqGS ˙ US1976411033

SecurityCLBK / Columbia Financial, Inc.
InstitutionD. E. Shaw & Co., Inc.
ManagerDE Shaw
Latest Disclosed Ownership229,013 shares
Latest Disclosed Value $ 4,010,018
D. E. Shaw & Co., Inc. reports 10.33% increase in ownership of CLBK / Columbia Financial, Inc.

On May 15, 2026 - D. E. Shaw & Co., Inc. filed a 13F-HR form disclosing ownership of 229,013 shares of Columbia Financial, Inc. (US:CLBK) valued at $4,010,018 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 207,574 shares of Columbia Financial, Inc.. This represents a change in shares of 10.33% during the quarter. The current value of the position is $4,541,328 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 COLUMBIA FINL COM 197641103 229,013 21,439 10.33 4,010 24.34 0.0024
2026-02-17 2025-12-31 13F COLUMBIA FINL COM 197641103 207,574 25,704 14.13 3,226 18.18 0.0018
2025-11-14 2025-09-30 13F COLUMBIA FINL COM 197641103 181,870 -6,100 -3.25 2,730 0.07 0.0015
2025-08-14 2025-06-30 13F COLUMBIA FINL COM 197641103 187,970 69,912 59.22 2,727 54.07 0.0019
2025-05-15 2025-03-31 13F COLUMBIA FINL COM 197641103 118,058 32,962 38.74 1,771 31.60 0.0016
2025-02-14 2024-12-31 13F COLUMBIA FINL COM 197641103 85,096 19,460 29.65 1,345 20.09 0.0010
2024-11-14 2024-09-30 13F COLUMBIA FINL COM 197641103 65,636 -6,776 -9.36 1,120 3.32 0.0010
2024-08-14 2024-06-30 13F COLUMBIA FINL COM 197641103 72,412 25,828 55.44 1,084 35.33 0.0010
2024-05-15 2024-03-31 13F COLUMBIA FINL COM 197641103 46,584 0 0.00 802 -10.80 0.0007
2024-02-14 2023-12-31 13F COLUMBIA FINL COM 197641103 46,584 -300 -0.64 898 22.01 0.0008
2023-11-14 2023-09-30 13F COLUMBIA FINL COM 197641103 46,884 -3,702 -7.32 737 -15.79 0.0008
2023-08-14 2023-06-30 13F COLUMBIA FINL COM 197641103 50,586 -7,935 -13.56 875 -18.24 0.0009
2023-05-15 2023-03-31 13F COLUMBIA FINL COM 197641103 58,521 -56,820 -49.26 1,070 -57.12 0.0011
2023-02-14 2022-12-31 13F COLUMBIA FINL COM 197641103 115,341 -42,068 -26.73 2,494 -25.05 0.0028
2022-11-14 2022-09-30 13F COLUMBIA FINL COM 197641103 157,409 -3,021 -1.88 3,326 -4.94 0.0040
2022-08-15 2022-06-30 13F COLUMBIA FINL COM 197641103 160,430 10,662 7.12 3,499 8.60 0.0041
2022-05-16 2022-03-31 13F COLUMBIA FINL COM 197641103 149,768 49,858 49.90 3,222 54.61 0.0030
2022-02-14 2021-12-31 13F COLUMBIA FINL COM 197641103 99,910 -258 -0.26 2,084 12.47 0.0017
2021-11-15 2021-09-30 13F COLUMBIA FINL COM 197641103 100,168 -8,397 -7.73 1,853 -0.86 0.0017
2021-08-16 2021-06-30 13F COLUMBIA FINL COM 197641103 108,565 70,368 184.22 1,869 179.79 0.0016
2021-05-17 2021-03-31 13F COLUMBIA FINL COM 197641103 38,197 38,197 668 0.0006
2021-02-16 2020-12-31 13F COLUMBIA FINL COM 197641103 0 -18,605 -100.00 0 -100.00
2020-11-16 2020-09-30 13F COLUMBIA FINL COM 197641103 18,605 18,605 207 0.0002
2019-11-14 2019-09-30 13F COLUMBIA FINL COM 197641103 0 -12,264 -100.00 0 -100.00
2019-08-14 2019-06-30 13F COLUMBIA FINL COM 197641103 12,264 12,264 185 0.0002
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.