# BLACKROCK INC (BLK) — Institutional Ownership

Source: SEC EDGAR 13F filings, congressional STOCK Act disclosures, SEC Form 4 insider transactions.
CUSIP: 09290D101
Page URL: https://superinvestorclub.com/stock/BLK
Last updated: 2026-08-29T13:46:12.878Z

## Summary

As of the most recent 13F filing period, BLACKROCK INC (BLK) is held by 9 tracked superinvestors with an aggregate position value of $1.27B representing 058170045328222020044575123174683744711343 shares.

## Top institutional holders (9)

| Rank | Manager | Fund | Shares | Value | % of Portfolio | Period |
|------|---------|------|--------|-------|----------------|--------|
| 1 | [Mason Morfit](https://superinvestorclub.com/manager/50) | ValueAct Capital | 581700 | $559.3M | 9.93% | 2026-06-30 |
| 2 | [William Von Mueffling](https://superinvestorclub.com/manager/2284) | Cantillon Capital Management | 453282 | $435.9M | 2.90% | 2026-03-31 |
| 3 | [Tom Gayner](https://superinvestorclub.com/manager/22) | Markel Group | 220200 | $211.7M | 1.61% | 2026-06-30 |
| 4 | [Bill Nygren](https://superinvestorclub.com/manager/73) | Harris Associates | 44575 | $42.9M | 0.06% | 2026-06-30 |
| 5 | [FPA Queens Road](https://superinvestorclub.com/manager/97) | Bragg Financial Advisors | 12317 | $11.8M | 0.32% | 2026-06-30 |
| 6 | [Ray Dalio](https://superinvestorclub.com/manager/6) | Bridgewater Associates | 4683 | $4.5M | 0.02% | 2026-06-30 |
| 7 | [Wally Obermeyer](https://superinvestorclub.com/manager/3283) | Obermeyer Wealth Partners | 744 | $715,401 | 0.03% | 2026-06-30 |
| 8 | [Dodge & Cox](https://superinvestorclub.com/manager/16) | Dodge & Cox | 711 | $683,669 | 0.00% | 2026-06-30 |
| 9 | [Hillman Value Fund](https://superinvestorclub.com/manager/95) | Hillman Capital Management | 343 | $329,815 | 0.24% | 2026-06-30 |

## Ownership history (quarter-over-quarter)

- 2024-12-31: 5 holders, $471.0M aggregate, 022763122020010264750648 shares
- 2025-03-31: 7 holders, $879.7M aggregate, 046785422913422020010478776655343 shares
- 2025-06-30: 8 holders, $1.26B aggregate, 051602726071622020019510411111784655363 shares
- 2025-09-30: 12 holders, $1.67B aggregate, 061949251040222020066698110573276781655342331186183 shares
- 2025-12-31: 10 holders, $1.61B aggregate, 069500051425222020054409113614581781711333190 shares
- 2026-03-31: 8 holders, $1.24B aggregate, 05461004532822202005455511857763711347 shares
- 2026-06-30: 8 holders, $832.0M aggregate, 058170022020044575123174683744711343 shares

## Recent congressional trades (50)

- 2026-07-30: Richard Dean Dr McCormick (R-GA) sale $1,001 - $15,000
- 2026-07-14: John J Mr McGuire (R-VA) sale $1,001 - $15,000
- 2026-07-10: John J Mr McGuire (R-VA) sale $1,001 - $15,000
- 2026-07-07: John McGuire (Republican-VA) sale $1,001 - $15,000
- 2026-06-12: Richard Dean Dr McCormick (R-GA) sale $1,001 - $15,000
- 2026-03-19: Richard Dean Dr McCormick (R-GA) purchase $1,001 - $15,000
- 2025-11-05: Richard Dean Dr McCormick (R-GA) purchase $1,001 - $15,000
- 2025-11-05: Rich McCormick (Republican-GA) purchase $1,001 - $15,000
- 2025-10-14: Lisa McClain (Republican-MI) sale $1,001 - $15,000
- 2025-09-23: Valerie Hoyle (D-OR) sale $1,001 - $15,000
- 2025-09-18: Richard Dean Dr McCormick (R-GA) sale $1,001 - $15,000
- 2025-08-18: Dan Newhouse (Republican-WA) sale $1,001 - $15,000
- 2025-08-18: Dan Newhouse (Republican-WA) sale $1,001 - $15,000
- 2025-08-11: Julie Johnson (Democrat-TX) sale $1,001 - $15,000
- 2025-08-11: Julie Johnson (Democrat-TX) sale $1,001 - $15,000

## Recent insider transactions (0)


## Citation

When citing, use: "BLACKROCK INC (BLK) institutional ownership data via Superinvestor (https://superinvestorclub.com/stock/BLK), aggregating SEC 13F, Form 4, and congressional disclosures."