Donaldson Company, Inc.
US ˙ NYSE ˙ US2576511099

SecurityDCI / Donaldson Company, Inc.
InstitutionHolocene Advisors, LP
Latest Disclosed Ownership27,177 shares
Latest Disclosed Value $ 2,306,512
Holocene Advisors, LP reports 18.73% decrease in ownership of DCI / Donaldson Company, Inc.

On May 15, 2026 - Holocene Advisors, LP filed a 13F-HR form disclosing ownership of 27,177 shares of Donaldson Company, Inc. (US:DCI) valued at $2,306,512 USD as of March 31, 2026. The entity filed a previous 13F-HR on February 17, 2026 disclosing 33,440 shares of Donaldson Company, Inc.. This represents a change in shares of -18.73% during the quarter. The current value of the position is $2,284,227 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 DONALDSON COM 257651109 27,177 -6,263 -18.73 2,307 -22.20 0.0056
2026-02-17 2025-12-31 13F DONALDSON COM 257651109 33,440 -17,041 -33.76 2,965 -28.25 0.0062
2025-11-14 2025-09-30 13F DONALDSON COM 257651109 50,481 -27,049 -34.89 4,132 -23.16 0.0094
2025-08-14 2025-06-30 13F DONALDSON COM 257651109 77,530 12,690 19.57 5,377 23.64 0.0131
2025-05-15 2025-03-31 13F DONALDSON COM 257651109 64,840 50,138 341.03 4,348 339.19 0.0127
2025-02-14 2024-12-31 13F DONALDSON COM 257651109 14,702 14,702 990 0.0032
2024-08-14 2024-06-30 13F DONALDSON COM 257651109 0 -37,424 -100.00 0 -100.00
2024-05-15 2024-03-31 13F DONALDSON COM 257651109 37,424 3,200 9.35 2,795 24.96 0.0103
2024-02-14 2023-12-31 13F DONALDSON COM 257651109 34,224 25,888 310.56 2,237 349.90 0.0087
2023-11-14 2023-09-30 13F DONALDSON COM 257651109 8,336 8,336 497 0.0022
2023-02-14 2022-12-31 13F DONALDSON COM 257651109 0 -50,319 -100.00 0 -100.00
2022-11-14 2022-09-30 13F DONALDSON COM 257651109 50,319 -32,074 -38.93 2,466 -37.82 0.0158
2022-08-15 2022-06-30 13F DONALDSON COM 257651109 82,393 -1,081 -1.30 3,966 -8.51 0.0240
2022-05-16 2022-03-31 13F DONALDSON COM 257651109 83,474 13,151 18.70 4,335 4.03 0.0226
2022-02-14 2021-12-31 13F DONALDSON COM 257651109 70,323 18,013 34.44 4,167 38.76 0.0217
2021-11-15 2021-09-30 13F DONALDSON COM 257651109 52,310 -23,597 -31.09 3,003 -37.72 0.0163
2021-08-16 2021-06-30 13F DONALDSON COM 257651109 75,907 -5,504 -6.76 4,822 1.84 0.0272
2021-05-17 2021-03-31 13F DONALDSON COM 257651109 81,411 26,646 48.66 4,735 54.74 0.0297
2021-02-16 2020-12-31 13F DONALDSON COM 257651109 54,765 26,755 95.52 3,060 135.38 0.0193
2020-11-16 2020-09-30 13F DONALDSON COM 257651109 28,010 -5,811 -17.18 1,300 -17.36 0.0099
2020-08-14 2020-06-30 13F DONALDSON COM 257651109 33,821 -8,118 -19.36 1,573 -2.90 0.0138
2020-05-15 2020-03-31 13F DONALDSON COM 257651109 41,939 7,526 21.87 1,620 -18.31 0.0174
2020-02-14 2019-12-31 13F DONALDSON COM 257651109 34,413 -3,685 -9.67 1,983 -0.05 0.0178
2019-11-14 2019-09-30 13F DONALDSON COM 257651109 38,098 14,440 61.04 1,984 64.92 0.0204
2019-08-14 2019-06-30 13F DONALDSON COM 257651109 23,658 2,668 12.71 1,203 14.46 0.0153
2019-05-15 2019-03-31 13F DONALDSON COM 257651109 20,990 -6,028 -22.31 1,051 -10.32 0.0161
2019-02-14 2018-12-31 13F DONALDSON COM 257651109 27,018 6,485 31.58 1,172 -2.01 0.0189
2018-11-14 2018-09-30 13F DONALDSON COM 257651109 20,533 10,390 102.44 1,196 161.14 0.0193
2018-08-14 2018-06-30 13F DONALDSON COM 257651109 10,143 10,143 458 0.0097
2018-05-15 2018-03-31 13F DONALDSON COM 257651109 0 -12,263 -100.00 0 -100.00
2018-02-14 2017-12-31 13F DONALDSON COM 257651109 12,263 12,263 600 0.0152
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.