Super Micro Computer, Inc. (SMCI) Ownership
SMCI ownership summary
as of October 18, 2026- Institutions
- 69.4% of shares outstanding
- Insiders
- 12.66% of shares outstanding
- Shares outstanding
- 657.0M
- Float
- 557.7M shares available to trade
- Short interest
- 14.82% 87.4M shares short
- Days to cover
- 2.35 short interest down 8.2% vs prior month
- Institutions 69.36%
- Insiders 12.66%
- Other investors 17.98%
SMCI top institutional holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | BlackRock Inc | 7.26% | 47.7M | $1.51B | +4.3M (+10.0%) | June 30, 2026 |
| 2 | Vanguard Capital Management, LLC | 5.53% | 36.4M | $1.15B | +3.5M (+10.5%) | June 30, 2026 |
| 3 | Vanguard Portfolio Management, LLC | 5.00% | 32.9M | $1.04B | +3.3M (+11.1%) | June 30, 2026 |
| 4 | Jane Street Group LLC | 4.38% | 28.8M | $910.5M | +24.4M (+551.4%) | June 30, 2026 |
| 5 | State Street Corp | 3.75% | 24.6M | $779.2M | +2.6M (+11.9%) | June 30, 2026 |
| 6 | UBS Group AG | 3.00% | 19.7M | $622.8M | +7.6M (+63.1%) | June 30, 2026 |
| 7 | Geode Capital Management, LLC | 2.36% | 15.5M | $490.6M | +1.4M (+9.6%) | June 30, 2026 |
| 8 | Amvescap Plc. | 1.78% | 11.7M | $370.6M | −96,391 (−0.8%) | June 30, 2026 |
| 9 | The Goldman Sachs Group Inc | 1.69% | 11.1M | $350.6M | +7.6M (+221.9%) | June 30, 2026 |
| 10 | Two Sigma Investments LLC | 1.49% | 9.8M | $309.5M | +8.9M (+978.8%) | June 30, 2026 |
| 11 | Morgan Stanley - Brokerage Accounts | 1.38% | 9.0M | $286.2M | +1.4M (+18.0%) | June 30, 2026 |
| 12 | BNP Paribas Arbitrage, SA | 1.17% | 7.7M | $243.0M | +2.2M (+41.4%) | June 30, 2026 |
| 13 | Renaissance Technologies Corp | 1.03% | 6.8M | $214.6M | +6.7M (+11,323.6%) | June 30, 2026 |
| 14 | NORGES BANK | 0.96% | 6.3M | $199.7M | +1.6M (+35.3%) | June 30, 2026 |
| 15 | Point72 Asset Management, L.P. | 0.72% | 4.8M | $150.4M | +4.7M (+14,760.3%) | June 30, 2026 |
| 16 | Charles Schwab Investment Management Inc | 0.72% | 4.7M | $149.3M | +559,036 (+13.4%) | June 30, 2026 |
| 17 | Marshall Wace Asset Management Ltd | 0.70% | 4.6M | $146.1M | −2.6M (−35.7%) | June 30, 2026 |
| 18 | Northern Trust Corp | 0.70% | 4.6M | $145.8M | +274,272 (+6.3%) | June 30, 2026 |
| 19 | Bank of America Corp | 0.68% | 4.5M | $141.0M | +565,329 (+14.5%) | June 30, 2026 |
| 20 | Ghisallo Capital Management LLC | 0.66% | 4.4M | $138.1M | +4.4M (0.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 20, 18 holders added 86.0M shares and 2 cut 2.7M.
SMCI top mutual fund and ETF holders
20 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Vanguard MStar Total Stk Mkt Idx Invest | 2.66% | 17.5M | $552.7M | −40,265 (−0.2%) | August 31, 2026 |
| 2 | Vanguard 500 Index Investor | 2.25% | 14.8M | $467.5M | −187,900 (−1.3%) | September 30, 2026 |
| 3 | Vanguard MStar Mid Cap Index Instl | 1.79% | 11.8M | $372.4M | −120,203 (−1.0%) | September 30, 2026 |
| 4 | Vanguard MStar Growth Index Investor | 1.25% | 8.2M | $260.5M | +189,450 (+2.4%) | September 30, 2026 |
| 5 | iShares Core S&P 500 ETF | 1.14% | 7.5M | $237.2M | −12,062 (−0.2%) | September 30, 2026 |
| 6 | Fidelity 500 Index | 1.11% | 7.3M | $231.1M | +28,051 (+0.4%) | August 31, 2026 |
| 7 | State Street® SPDR® S&P 500® ETF | 1.05% | 6.9M | $219.0M | — | September 30, 2026 |
| 8 | Vanguard Information Technology ETF | 0.86% | 5.6M | $178.6M | +12,985 (+0.2%) | September 30, 2026 |
| 9 | Invesco S&P 500® Equal Weight ETF | 0.76% | 5.0M | $158.9M | −10,450 (−0.2%) | September 30, 2026 |
| 10 | Vanguard MStar Mid Cap Growth ETF | 0.66% | 4.3M | $136.5M | +92,421 (+2.2%) | September 30, 2026 |
| 11 | State Street®TechSelSectSPDR®ETF | 0.62% | 4.1M | $128.4M | +2,496 (+0.1%) | September 30, 2026 |
| 12 | iShares Future AI & Tech ETF | 0.55% | 3.6M | $113.9M | — | September 30, 2026 |
| 13 | iShares A.I. Innovation and Tech Act ETF | 0.54% | 3.6M | $113.2M | — | September 30, 2026 |
| 14 | Vanguard Institutional Index I | 0.45% | 3.0M | $94.1M | −31,968 (−1.1%) | September 30, 2026 |
| 15 | Hwabao WP Nasdaq Select Stock (QDII) A | 0.39% | 2.6M | $80.8M | +825,336 (+47.7%) | June 30, 2026 |
| 16 | iShares Russell Mid-Cap ETF | 0.35% | 2.3M | $72.9M | +4,237 (+0.2%) | September 30, 2026 |
| 17 | Fidelity Mid Cap Index | 0.33% | 2.1M | $67.9M | +33,918 (+1.6%) | August 31, 2026 |
| 18 | Invesco S&P 500® Equal Weight Tech ETF | 0.31% | 2.0M | $64.4M | +1,110 (+0.1%) | September 30, 2026 |
| 19 | Global X Data Center & Dgtl Infrs ETF | 0.24% | 1.6M | $49.6M | — | September 30, 2026 |
| 20 | State Street® SPDR® Port S&P 500® ETF | 0.23% | 1.5M | $46.8M | −988 (−0.1%) | September 30, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
SMCI insider transactions
latest 12| Date | Name | Transaction | Price | Shares | Value |
|---|---|---|---|---|---|
| 2025-12-31 | John Boozman | Sell | $29.27 | — | — |
| 2025-12-11 | John Boozman | Buy | $34.02 | — | — |
| 2025-11-12 | Gilbert Ray Cisneros, Jr. | Sell | $37.91 | — | — |
| 2025-09-15 | David E Weigand | Sell | $45.14 | 25,000 | $1.1M |
| 2025-09-05 | Gilbert Ray Cisneros, Jr. | Buy | $40.41 | — | — |
| 2025-09-03 | David E Weigand | Sell | $40.29 | 25,000 | $1.0M |
| 2025-08-22 | George Kao | Sell | $43.88 | 40,000 | $1.8M |
| 2025-07-28 | Charles Liang | Sell | $60.00 | 200,000 | $12.0M |
| 2025-07-28 | Liang Chiu-Chu Sara Liu | Sell | $60.00 | 200,000 | $12.0M |
| 2025-06-18 | Charles Liang | Sell | $45.00 | 300,000 | $13.5M |
| 2025-06-18 | Liang Chiu-Chu Sara Liu | Sell | $45.00 | 300,000 | $13.5M |
| 2025-05-20 | David E Weigand | Sell | $44.02 | 67,000 | $2.9M |
Reported trades by company officers, directors and other filers (including disclosures by members of Congress where EODHD lists them). "—" where the filing gives no share count.
SMCI shares outstanding
Year-end shares outstanding, adjusted for splits.
Who owns SMCI
Institutional investors own 69.4% of Supermicro's shares and insiders 12.66%. The largest holder is BlackRock Inc with 7.26% of the shares (47.7M), as of June 30, 2026. Among the top 20 institutions, 18 added shares and 2 reduced their stake in the latest filings. Short interest is 14.82% of the float, or 2.35 days of average trading volume. The share count rose 31.9% since 2014.
Related: SMCI analyst forecast, SMCI key metrics. See the SMCI stock overview for the latest quote and news.
SMCI ownership FAQ
Who owns the most Supermicro stock?
The largest shareholders of Supermicro are BlackRock Inc (7.26%), Vanguard Capital Management, LLC (5.53%), Vanguard Portfolio Management, LLC (5.00%), Jane Street Group LLC (4.38%), State Street Corp (3.75%).
What percentage of Supermicro is owned by institutions?
Institutions hold 69.4% of Supermicro's shares outstanding; insiders hold 12.66%.
Which funds own Supermicro?
The largest fund holders of Supermicro are Vanguard MStar Total Stk Mkt Idx Invest (2.66%), Vanguard 500 Index Investor (2.25%), Vanguard MStar Mid Cap Index Instl (1.79%), Vanguard MStar Growth Index Investor (1.25%), iShares Core S&P 500 ETF (1.14%).
What is Supermicro's short interest?
87.4M shares of Supermicro were sold short, 14.82% of the float; at the average daily volume it would take 2.35 days to cover.
Are insiders buying or selling Supermicro?
Of the latest 12 reported insider transactions in Supermicro (since May 20, 2025), 2 were purchases and 10 were sales.
How many shares of Supermicro are outstanding?
Supermicro has 657.0M shares outstanding, of which 557.7M are in the public float.