Blackrock Inc.
Rank #1
8.75%
- Shares
- 28.12M
- Change %
- +14.18%
- Filing
- Jun 30, 2026
Increased

Holders
Top CORZ institutional shareholders, filing changes, and Form 4 insider activity with filters for buys, sales, option exercises, gifts, and tax withholding.
Section freshness
Prices as of Sep 10, 4:00 PM EDT · Fundamentals checked Sep 10, 8:58 PM EDT · Statements Jun 30, 2026
Ownership read
Blackrock Inc. is the largest institutional holder. 37 sales and 9 purchases appear in the recent Form 4 filings. Use the filters below to separate open-market activity from option exercises, gifts, awards, and tax withholding.
Insider flow
CORZ
Directional bars ignore awards, gifts, conversions, and tax withholding rows.
Top holder
28.12M
Blackrock Inc.
Insider stance
Mixed, sale-heavy
$20.61M sold / $2.25M bought
Latest filing
Aug 31, 2026
Most recent holder or insider filing date
Filings shown
105
30 holder / 75 insider
Top 30 institutional holders
Ranked by reported share count, with position changes and latest filing dates where ownership data supplies them.
Blackrock Inc.
Rank #1
8.75%
Increased
Situational Awareness LP
Rank #2
8.09%
Unchanged
Jericho Capital Asset Management, LP
Rank #3
7.12%
Increased
Vanguard Portfolio Management LLC
Rank #4
5.81%
Increased
UBS Group AG
Rank #5
4.94%
Decreased
Vanguard Capital Management LLC
Rank #6
4.29%
Increased
Two Sigma Investments, LP
Rank #7
3.20%
Increased
Value Aligned Research Advisors, LLC
Rank #8
2.86%
Increased
Two Seas Capital Lp
Rank #9
2.81%
Decreased
Geode Capital Management, LLC
Rank #10
2.64%
Increased
VANGUARD INDEX FUNDS-Vanguard Total Stock Market Index Fund
Rank #11
2.98%
Increased
iShares Trust-iShares Russell 2000 ETF
Rank #12
2.51%
Increased
VANGUARD INDEX FUNDS-Vanguard Small-Cap Index Fund
Rank #13
2.16%
Increased
VANGUARD WORLD FUND-Vanguard Information Technology Index Fund
Rank #14
1.93%
Increased
VANGUARD INDEX FUNDS-Vanguard Small-Cap Growth Index Fund
Rank #15
1.24%
Increased
VANGUARD INDEX FUNDS-Vanguard Extended Market Index Fund
Rank #16
1.13%
Increased
Fidelity Salem Street Trust-Fidelity Small Cap Index Fund
Rank #17
1.06%
Increased
American Century Mutual Funds, Inc.-Small Cap Growth Fund
Rank #18
0.86%
Increased
iShares Trust-iShares Russell 2000 Growth ETF
Rank #19
0.79%
Increased
T. Rowe Price New Horizons Fund, Inc.
Rank #20
0.76%
Increased
| # | Institution | % held | Shares | Filing date |
|---|---|---|---|---|
| 1 | 8.75% | 28.12M | Jun 30, 2026 | |
| 2 | Situational Awareness LP | 8.09% | 26.01M | Jun 30, 2026 |
| 3 | Jericho Capital Asset Management, LP | 7.12% | 22.88M | Jun 30, 2026 |
| 4 | 5.81% | 18.66M | Jun 30, 2026 | |
| 5 | 4.94% | 15.89M | Jun 30, 2026 | |
| 6 | 4.29% | 13.80M | Jun 30, 2026 | |
| 7 | Two Sigma Investments, LP | 3.20% | 10.28M | Jun 30, 2026 |
| 8 | Value Aligned Research Advisors, LLC | 2.86% | 9.19M | Jun 30, 2026 |
| 9 | Two Seas Capital Lp | 2.81% | 9.03M | Jun 30, 2026 |
| 10 | 2.64% | 8.50M | Jun 30, 2026 | |
| 11 | 2.98% | 9.59M | Jun 30, 2026 | |
| 12 | iShares Trust-iShares Russell 2000 ETF | 2.51% | 8.06M | Jun 30, 2026 |
| 13 | 2.16% | 6.93M | Jun 30, 2026 | |
| 14 | 1.93% | 6.19M | May 31, 2026 | |
| 15 | 1.24% | 3.99M | Jun 30, 2026 | |
| 16 | 1.13% | 3.65M | Jun 30, 2026 | |
| 17 | 1.06% | 3.40M | Jun 30, 2026 | |
| 18 | American Century Mutual Funds, Inc.-Small Cap Growth Fund | 0.86% | 2.78M | Jun 30, 2026 |
| 19 | iShares Trust-iShares Russell 2000 Growth ETF | 0.79% | 2.52M | Jun 30, 2026 |
| 20 | 0.76% | 2.44M | Jun 30, 2026 |
Recent insider transactions
Action codes are translated so open-market buys and sales are separate from awards, gifts, conversions, and tax withholding.
DUCHENE TODD M
Officer
Filed Aug 31, 2026
DUCHENE TODD M
Officer
Filed Aug 24, 2026
CRAIN ELIZABETH A
Director
Filed Aug 20, 2026
WEISS ERIC STANTON
Director
Filed Aug 18, 2026
DUCHENE TODD M
Officer
Filed Aug 17, 2026
DUCHENE TODD M
Officer
Filed Aug 10, 2026
DUCHENE TODD M
Officer
Filed Aug 3, 2026
ADAMS MARK W
Director
Filed Jul 30, 2026
DUCHENE TODD M
Officer
Filed Jul 27, 2026
DUCHENE TODD M
Officer
Filed Jul 20, 2026
DUCHENE TODD M
Officer
Filed Jul 13, 2026
DUCHENE TODD M
Officer
Filed Jul 6, 2026
| # | Insider | % company | Action | Shares | Filing date |
|---|---|---|---|---|---|
| 1 | DUCHENE TODD M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.00K | Aug 31, 2026 |
| 2 | DUCHENE TODD M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.00K | Aug 24, 2026 |
| 3 | CRAIN ELIZABETH A Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 6.00K | Aug 20, 2026 |
| 4 | WEISS ERIC STANTON Director | <0.01% | PurchaseOpen-market or direct purchase reported on Form 4. | 7.00K | Aug 18, 2026 |
| 5 | DUCHENE TODD M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.00K | Aug 17, 2026 |
| 6 | DUCHENE TODD M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.00K | Aug 10, 2026 |
| 7 | DUCHENE TODD M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.00K | Aug 3, 2026 |
| 8 | ADAMS MARK W Director | <0.01% | Stock Award(Grant)Provider-supplied Form 4 action code. Review the original filing before making a trading judgment. | 27.59K | Jul 30, 2026 |
| 9 | DUCHENE TODD M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.00K | Jul 27, 2026 |
| 10 | DUCHENE TODD M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.00K | Jul 20, 2026 |
| 11 | DUCHENE TODD M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.00K | Jul 13, 2026 |
| 12 | DUCHENE TODD M Officer | <0.01% | SaleOpen-market or direct sale reported on Form 4. | 10.00K | Jul 6, 2026 |
Frequently asked
Blackrock Inc. is the largest reported institutional holder of CORZ, with 28.12 million shares, or about 8.75% of shares outstanding.
Core Scientific has 30 institutional rows on file: 17 increased or initiated positions and 2 reduced them as of Aug 31, 2026.
TECHi shows 75 dated CORZ insider transactions through Aug 31, 2026, with transaction types kept separate so administrative actions are not presented as open-market trades.
The displayed CORZ activity reads Mixed, sale-heavy: 37 sales and 9 purchases. Other transaction types remain separate.
SULLIVAN ADAM TAYLOR has the largest absolute share movement in the displayed CORZ filing rows, totaling 2.21 million shares. The action labels provide the transaction context.