Security key
98887Q104
Zai Lab Ltd - Ordinary Shares, par value $0.000006 per share (ZLAB)
CUSIP: 98887Q104
Q1 2026 13F Holders as of 31 Mar 2026
- Security type / class
- Equity / Ordinary Shares, par value $0.000006 per share
- Total 13F shares
- 28,248,273
- Total 13F value
- $530,947,832
- Share change
- -692,633
- Put/Call ratio
- 2690%
- SEC-reported price per share
- $18.81
- Number of holders
- 99
- Value change
- -$7,735,935
- Number of buys
- 43
- Number of sells
- 84
- Shares outstanding
- 1,115,674,528
Holder snapshot
7 signals
Open additional details 1 more signal available
Security identity
Names, identifiers, and filing context for this profile.
1 source field
Report period
Q1 2026
Institutions
99
Top holders
10
ZLAB full security history
Ownership snapshot
Full 13F holder table
Zai Lab Ltd SEC filings
Zai Lab Ltd company facts
Broader feeds
Ownership snapshot
Top reported holders of ZLAB - Zai Lab Ltd - Ordinary Shares, par value $0.000006 per share (13F + 13D/G + 3/4/5)
Grouped by holder across the latest SEC ownership disclosures. Start with comparable ownership when available, then verify the linked 13F, 13D/G, or 3/4/5 evidence.
Comparable stake leader
RTW INVESTMENTS, LP
Disclosed value leader
Qiming Venture Partners I...
Comparable rows
15/15
Latest evidence
30 Mar 2026
13D/G
13F
Lead comparable stake: 6.3%
13D/G row: RTW INVESTMENTS, LP
Showing 1-6 of 15 holder rows.
Quick read
RTW INVESTMENTS, LP leads the comparable SEC ownership view at 6.3%.
15 of 15 rows have a safely comparable ownership percentage. Use this as a filing-backed starting point, then open the detailed table for source links, reporting role, position value, share count, and filing date.
Open SEC evidence
Opens RTW INVESTMENTS, LP's linked filing trail.
Comparable ownership
Top 5
RTW INVESTMENTS, LP
6.3%
Qiming Venture Partners IV, L.P.
6%
RA CAPITAL MANAGEMENT, L.P.
5.2%
Qiming Corporate GP IV, Ltd
4.4%
WELLINGTON MANAGEMENT GROUP LLP
4.3%
Ownership % is shown only when SEC disclosures are safely comparable across share classes.
Detailed SEC evidence table Showing 1-6 of 15 holder rows
| Holder | Evidence | Ownership % | Position | 12M Net Δ | As of |
|---|---|---|---|---|---|
| RTW INVESTMENTS, LP |
13D/G
13F
Company
|
6.3%
|
$1,258,888,889
69,590,320 shares
|
+$844,379,694 | 31 Dec 2025 |
| Qiming Venture Partners IV, L.P. |
13D/G
Qiming Corporate GP IV, Ltd.
|
6%
|
$2,365,303,551
66,329,320 shares
|
$0 | 30 Jun 2025 |
| RA CAPITAL MANAGEMENT, L.P. |
13D/G
|
5.2%
|
$1,083,804,677
57,435,330 shares
|
$0 | 30 Mar 2026 |
| Qiming Corporate GP IV, Ltd |
13D/G
|
4.4%
|
$884,305,102
48,883,643 shares
|
$0 | 31 Dec 2025 |
| WELLINGTON MANAGEMENT GROUP LLP |
13F
13D/G
Company
|
4.3%
from 13D/G
|
$13,280,417
752,858 shares
|
— | 31 Dec 2025 |
| FMR LLC |
13F
13D/G
Company
|
3.9%
from 13D/G
|
$25,408,762
1,440,406 shares
|
— | 31 Dec 2025 |
How to read this table
Rows are grouped by holder and ranked first by SEC-reported ownership % when it is safely comparable, then by disclosed holdings value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.
13F holder rows
Institutional holders as of Q1 2026
Investor-level positions for this CUSIP, loaded as an interactive table.
Institutions
99
Shares
28,248,273
Rows available
99
| Investor | Option | Weight % | Change % | SEC-reported value | * Price | Shares | Share Change | Activity | Report Period |
|---|
* SEC-reported price is the security price as of the portfolio date and can indicate the last known price at which the security was still held. The marker flags a reported price that did not pass the local price check.
Compare Q1 2026 vs Q1 2026 Across Filers
Q1 2026 holders
99
Q1 2026 holders
99
Holder diff
0
| Investor | Q1 2026 Shares | Q1 2026 Shares | Share Diff | Share Chg % | Q1 2026 value | Q1 2026 value | Value change | Value Chg % |
|---|