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Of the 8 tracked institutions holding ZLAB, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +7.9pt. It's a gauge of who owns the name, not just how many.
Among the 8 tracked institutional investors we monitor, ZLAB (ZAI LAB LTD-ADR) is held with a combined value of $187.79M across 9,983,303 shares. The largest holder is RA CAPITAL MANAGEMENT, L.P. with a position worth $107.35M (1.14% of their portfolio). 3 funds opened new positions in the most recent quarter. 2 funds increased their holdings. 3 funds reduced their position.
Total Institutional Value
$187.79M
Total Shares Held
9,983,303
Institutional Holders
8
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | RA CAPITAL MANAGEMENT, L.P. | $107.35M | 1.14% | New |
| 2 | CITADEL ADVISORS LLC | $31.76M | 0.02% | +0.0% |
| 3 | FMR LLC | $23.75M | 0.00% | -12.4% |
| 4 | BlackRock, Inc. | $16.27M | 0.00% | +36.2% |
| 5 | PRICE T ROWE ASSOCIATES INC /MD/ | $5.49M | 0.00% | -51.6% |
| 6 | STATE STREET CORP | $2.23M | 0.00% | -12.9% |
| 7 | Point72 Asset Management, L.P. | $660.61K | 0.00% | New |
| 8 | RENAISSANCE TECHNOLOGIES LLC | $268.98K | 0.00% | New |
SEC Schedule 13D (activist) and 13G (passive) filings for ZLAB. Filed when an investor acquires 5%+ ownership.
As of the latest SEC 13F filings, RA CAPITAL MANAGEMENT, L.P. is the largest institutional holder of ZLAB with a position worth $107.35M, representing 1.14% of their portfolio. In total, 8 institutional investors hold ZLAB with a combined value of $187.79M.
In the most recent quarter, 3 funds opened a new position in ZLAB. Additionally, 2 increased their holdings and 3 reduced their positions.
Institutional investors hold $187.79M worth of ZLAB stock across 8 positions. The largest institutional holder is RA CAPITAL MANAGEMENT, L.P. with $107.35M 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 ZLAB, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their ZLAB 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 →
Last Close
$19.22
2026-07-24
YTD
+10.9%
12% of 52-week range
