CEREBRAS SYSTEMS INC (CBRS)
Institutional ownership reported to the SEC as of Q3 2026, across 3 quarters.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| REX Advisers, LLC | $896.8K | 4,600 | 4.25% | new | NEW |
| Baring Financial LLC | $893.0K | 5,026 | 0.48% | 2q | +268.5%+$650.6K |
| Silverleafe Capital Partners, LLC | $835.0K | 4,700 | 0.24% | new | NEW |
| Farther Finance Advisors, LLC | $347.0K | 1,953 | 0.00% | new | NEW |
| Bullock Wealth Management Group | $97.8K | 577 | 0.04% | 2q | -0.7% |
| CoreCap Advisors, LLC | $51.7K | 291 | 0.00% | new | NEW |
| MassMutual Private Wealth & Trust, FSB | $35.5K | 200 | 0.00% | 2q | HELD |
| GK Wealth Management LLC | $31.1K | 175 | 0.02% | new | NEW |
| Wealth Enhancement Trust Services, Inc. | $26.1K | 147 | 0.00% | new | NEW |
| Investors Research Corp | $12.1K | 68 | 0.00% | 2q | +580.0%+$10.3K |
| Byrne Asset Management LLC | $8.0K | 47 | 0.00% | 2q | -11.3%-$1.0K |
| TOTH FINANCIAL ADVISORY CORP | $3.7K | 21 | 0.00% | new | NEW |
| ARMSTRONG ADVISORY GROUP, INC | $1.8K | 10 | 0.00% | 2q | HELD |
| Rye Brook Capital LLC | $1.1K | 6,289 | 0.72% | 2q | +11.6% |
| GAMMA Investing LLC | $178 | 1 | 0.00% | 2q | -50.0% |
Five percent filings
Anyone crossing 5% of a company must say so within days - far sooner than the next quarterly holdings report. A 13D declares an intent to influence the company; a 13G is the passive version. See all activist filings →
| Filed | Form | Filer | % of class |
|---|---|---|---|
| 2026-08-14 | 13G | COATUE MANAGEMENT LLCwith 3 co-filers | 7.1% |
| 2026-08-14 | 13G | Benchmark Capital Management Co. VIII, L.L.C.with 11 co-filers | 9.8% |
| 2026-08-14 | 13G | Andrew Feldman INDIVIDUAL | 9.2% |
| 2026-08-14 | 13G | Altimeter Capital Management, LPwith 2 co-filers | 6.2% |
| 2026-08-14 | 13G | Foundation Capital Management Co. VIII, L.L.C.with 4 co-filers | 12.2% |
| 2026-08-14 | 13G | Atreides Management, LPwith 2 co-filers | 10.7% |
| 2026-08-13 | 13G | JANE STREET GROUP, LLCwith 1 co-filers | 5.1% |
| 2026-07-22 | 13G/A | JPMORGAN CHASE & CO. | 3.3% |
| 2026-07-08 | 13G/A | FMR LLCwith 1 co-filers | 25.7% |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-20 | Lie Sean | Chief Technology Officer | Sold | 710,247 | $147.6M ×10 |
| 2026-09-29 | Mallick Dhiraj | Chief Operating Officer | Sold | 396,000 | $80.8M ×19 |
| 2026-08-21 | Feldman Andrew D. | CEO, President | Sold | 237,559 | $47.3M ×13 |
| 2026-09-25 | Lie Sean | Chief Technology Officer | Sold | 120,000 | $25.1M ×9 |
| 2026-08-17 | Vishria Eric | Director | Sold | 68,268 | $15.7M ×6 |
| 2026-09-04 | Lie Sean | Chief Technology Officer | Sold | 53,460 | $11.2M |
| 2026-08-14 | Vassallo Steven | Director | Sold | 50,000 | $10.9M ×5 |
| 2026-09-04 | Vassallo Steven | Director | Sold | 50,000 | $10.5M ×3 |
| 2026-08-18 | Mallick Dhiraj | Chief Operating Officer | Sold | 38,889 | $8.6M ×26 |
| 2026-09-04 | Feldman Andrew D. | CEO, President | Sold | 37,441 | $7.9M ×16 |
| 2026-09-29 | Komin Robert Patrick Jr. | Chief Financial Officer | Sold | 32,500 | $6.6M ×16 |
| 2026-06-25 | Mallick Dhiraj | Chief Operating Officer | Sold | 36,131 | $6.1M ×29 |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 14 | $3.2M | 17,816 | 7 | 2 | 3 | 0.0% |
| Q2 2026 | 430 | $24.6B | 91,207,102 | 439 | 0 | 0 | 18.5% |
| Q2 2025 | 1 | $229.8K | 1,040 | 1 | 0 | 0 | 0.0% |