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Of the 7 tracked institutions holding RPID, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +4.7pt. It's a gauge of who owns the name, not just how many.
Among the 7 tracked institutional investors we monitor, RPID (RAPID MICRO BIOSYSTEMS INC) is held with a combined value of $9.89M across 5,055,329 shares. The largest holder is ARMISTICE CAPITAL, LLC with a position worth $5.76M (0.16% of their portfolio). 2 funds opened new positions in the most recent quarter. 3 funds increased their holdings. 1 fund reduced its position.
Total Institutional Value
$9.89M
Total Shares Held
5,055,329
Institutional Holders
7
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | ARMISTICE CAPITAL, LLC | $5.76M | 0.16% | New |
| 2 | VANGUARD GROUP INC | $2.84M | 0.00% | +1.4% |
| 3 | MILLENNIUM MANAGEMENT LLC | $409.32K | 0.00% | -16.5% |
| 4 | RENAISSANCE TECHNOLOGIES LLC | $366.94K | 0.00% | +67.5% |
| 5 | BlackRock, Inc. | $328.41K | 0.00% | +20.7% |
| 6 | STATE STREET CORP | $162.40K | 0.00% | - |
| 7 | CITADEL ADVISORS LLC | $27.93K | 0.00% | New |
As of the latest SEC 13F filings, ARMISTICE CAPITAL, LLC is the largest institutional holder of RPID with a position worth $5.76M, representing 0.16% of their portfolio. In total, 7 institutional investors hold RPID with a combined value of $9.89M.
In the most recent quarter, 2 funds opened a new position in RPID. Additionally, 3 increased their holdings and 1 reduced their positions.
Institutional investors hold $9.89M worth of RPID stock across 7 positions. The largest institutional holder is ARMISTICE CAPITAL, LLC with $5.76M 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 RPID, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their RPID positions.
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 →
| 2026-08-14 |
SEC Schedule 13D (activist) and 13G (passive) filings for RPID. Filed when an investor acquires 5%+ ownership.
Last Close
$0.82
2026-10-21
YTD
-74.0%
1% of 52-week range
