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Of the 7 tracked institutions holding QMCO, 3 have a 3-year clone track record — 3 of them beat the S&P. Average holder's clone alpha: +5.3pt. It's a gauge of who owns the name, not just how many.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Among the 7 tracked institutional investors we monitor, QMCO (QUANTUM CORP) is held with a combined value of $10.09M across 1,175,928 shares. The largest holder is VANGUARD GROUP INC with a position worth $4.03M. 3 funds opened new positions in the most recent quarter. 4 funds increased their holdings.
Total Institutional Value
$10.09M
Total Shares Held
1,175,928
Institutional Holders
7
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $4.03M | 0.00% | +106.0% |
| 2 | BlackRock, Inc. | $3.00M | 0.00% | +25.5% |
| 3 | RENAISSANCE TECHNOLOGIES LLC | $1.70M | 0.00% | New |
| 4 | STATE STREET CORP | $835.05K | 0.00% | +4.3% |
| 5 | PRICE T ROWE ASSOCIATES INC /MD/ | $276.00K | 0.00% | +15.0% |
| 6 | MILLENNIUM MANAGEMENT LLC | $239.31K | 0.00% | New |
| 7 | FMR LLC | $1.17K | 0.00% | New |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of QMCO with a position worth $4.03M, representing 0.00% of their portfolio. In total, 7 institutional investors hold QMCO with a combined value of $10.09M.
In the most recent quarter, 3 funds opened a new position in QMCO. Additionally, 4 increased their holdings.
Institutional investors hold $10.09M worth of QMCO stock across 7 positions. The largest institutional holder is VANGUARD GROUP INC with $4.03M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For QMCO, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their QMCO positions.
None this quarter.
| 2026-08-14 |
| 5.1% | 2026-08-10 |
SEC Schedule 13D (activist) and 13G (passive) filings for QMCO. Filed when an investor acquires 5%+ ownership.
Last Close
$22.25
2026-08-21
YTD
+217.9%
82% of 52-week range