Loading...
Loading...
Of the 11 tracked institutions holding RGEN, 6 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +8.4pt. It's a gauge of who owns the name, not just how many.
Among the 11 tracked institutional investors we monitor, RGEN (REPLIGEN CORP) is held with a combined value of $2.87B across 20,014,346 shares. The largest holder is VANGUARD GROUP INC with a position worth $818.31M (0.01% of their portfolio). Duquesne Family Office LLC opened a new position in the most recent quarter. 5 funds increased their holdings. 5 funds reduced their position.
Total Institutional Value
$2.87B
Total Shares Held
20,014,346
Institutional Holders
11
% of Shares Outstanding
35.5%
of 56.44M shares · SEC 2026-07-24
Days to Cover
6.4-0.8%
6.09M shares short · FINRA 2026-08-14
Tracked 13F institutions hold 35.5% of RGEN's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-07-24), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | $818.31M | 0.01% | -1.0% |
| 2 | BlackRock, Inc. | $734.72M | 0.01% | -10.1% |
| 3 | FMR LLC | $453.89M | 0.02% | +15.2% |
| 4 | MAVERICK CAPITAL LTD | $270.77M | 2.44% | +30.7% |
| 5 | STATE STREET CORP | $245.68M | 0.01% | +1.3% |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $239.08M | 0.02% | -64.1% |
| 7 | CITADEL ADVISORS LLC | $51.34M | 0.03% | -65.8% |
| 8 | Point72 Asset Management, L.P. | $22.67M | 0.03% | -70.8% |
| 9 | Gotham Asset Management, LLC | $19.46M | 0.05% | +396.1% |
| 10 | Duquesne Family Office LLC | $10.56M | 0.24% | New |
| Member | Type | Date |
|---|---|---|
| Lisa McClain | Sell | Oct 31, 2025 |
| Lisa McClain | Sell | Oct 30, 2025 |
| Lisa McClain | Buy | Oct 30, 2025 |
| Lisa McClain | Buy |
As of the latest SEC 13F filings, VANGUARD GROUP INC is the largest institutional holder of RGEN with a position worth $818.31M, representing 0.01% of their portfolio. In total, 11 institutional investors hold RGEN with a combined value of $2.87B.
In the most recent quarter, 1 fund opened a new position in RGEN. Additionally, 5 increased their holdings and 5 reduced their positions.
Institutional investors hold $2.87B worth of RGEN stock across 11 positions. The largest institutional holder is VANGUARD GROUP INC with $818.31M 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 RGEN, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their RGEN 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 →
| 2026-07-31 |
SEC Schedule 13D (activist) and 13G (passive) filings for RGEN. Filed when an investor acquires 5%+ ownership.
| Jul 22, 2025 |
| Lisa McClain | Sell | Jun 17, 2025 |
| Lisa McClain | Buy | Jun 11, 2025 |
| Jefferson Shreve | Sell | Apr 7, 2025 |
Last Close
$165.05
2026-09-09
YTD
+0.4%
79% of 52-week range
