BLACKROCK INC (BLK) Institutional Ownership Changes & 13F Activity
BLACKROCK INC (BLK) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include ValueAct Holdings, Cantillon Capital Management, Sequoia Financial Advisors, Cullen Value Fund, and Hillman Value Fund.
| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q1 2023 | Cantillon Capital Management | Sell | -5,272 | 432,376 | $289,311,429 |
| Q1 2023 | Meritage Group | Buy | 347 | 347 | $232 |
| Q1 2023 | Hillman Value Fund | Sell | -36 | 780 | $521,914 |
| Q1 2023 | Sequoia Financial Advisors | Buy | 35 | 1,571 | $1,051,246 |
| Q4 2022 | Cantillon Capital Management | Buy | 11,959 | 437,648 | $310,130,502 |
| Q4 2022 | Sequoia Financial Advisors | Buy | 514 | 1,536 | $1,088,485 |
| Q4 2022 | Hillman Value Fund | Sell | -86 | 816 | $578,242 |
| Q3 2022 | Cantillon Capital Management | Buy | 53,808 | 425,689 | $234,248 |
| Q3 2022 | Sequoia Financial Advisors | Sell | -101 | 1,022 | $562 |
| Q3 2022 | Hillman Value Fund | Buy | 72 | 902 | $496 |
| Q2 2022 | Renaissance Technologies LLC | Sell | -161,400 | 84,000 | $51,159 |
| Q2 2022 | Cantillon Capital Management | Buy | 142,602 | 371,881 | $226,490 |
| Q2 2022 | Sequoia Financial Advisors | Buy | 98 | 1,123 | $684 |
| Q2 2022 | Hillman Value Fund | Buy | 67 | 830 | $505 |
| Q1 2022 | Renaissance Technologies LLC | Buy | 218,400 | 245,400 | $187,527 |
| Q1 2022 | Cantillon Capital Management | Buy | 126,984 | 229,279 | $175,208 |
| Q1 2022 | Hillman Value Fund | Buy | 763 | 763 | $583 |
| Q1 2022 | Sequoia Financial Advisors | Buy | 268 | 1,025 | $783 |
| Q4 2021 | Cantillon Capital Management | Buy | 102,295 | 102,295 | $93,657 |
| Q4 2021 | Sequoia Financial Advisors | Buy | 489 | 757 | $693 |
| Q3 2021 | Sequoia Financial Advisors | Sell | -536 | 268 | $225 |
| Q2 2021 | Sequoia Financial Advisors | Buy | 13 | 804 | $703 |
| Q1 2021 | Sequoia Financial Advisors | Sell | -19 | 791 | $596 |
| Q4 2020 | Renaissance Technologies LLC | Sell | -100,000 | 27,000 | $19,482 |
| Q4 2020 | Sequoia Financial Advisors | Buy | 98 | 810 | $584 |
| Q3 2020 | Sequoia Financial Advisors | Buy | 712 | 712 | $401 |
| Q3 2020 | Dodge & Cox Stock Fund | Sell | -265 | 750 | $423 |
| Q2 2020 | Sequoia Financial Advisors | Sell | -774 | 0 | $402 |
| Q2 2020 | Dodge & Cox Stock Fund | Buy | 265 | 1,015 | $552 |
| Q1 2020 | Sequoia Financial Advisors | Buy | 9 | 774 | $341 |
Frequently asked questions about BLK activity
Which institutional owners are buying BLK?
Institutional owners buying BLK include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in BLK activity?
"Buy" means an investor increased their reported position in BLK compared to the prior reporting period. This reflects growing exposure to BLACKROCK INC (BLK) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in BLK increasing?
Institutional interest in BLK can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.