I-MAB-SPONSORED ADR (IMAB) Top Institutional Shareholders
I-MAB-SPONSORED ADR (IMAB) is currently reported in institutional portfolios tracked by InsiderSet based on the latest available SEC Form 13F filings for the quarter ended March 31, 2026. The institutional investors covered on this page collectively reported approximately $73.34M in IMAB holdings during the latest filing period.
Janus Henderson Group Plc is currently the largest disclosed institutional shareholder of IMAB tracked by InsiderSet, reporting ownership valued at approximately $14.81M in its March 31, 2026 SEC Form 13F filing.
The top 10 institutional shareholders tracked on this page collectively account for approximately 87% of the total disclosed IMAB value among the investors covered in this analysis. Major shareholders include Janus Henderson Group Plc, Hhlr Advisors, Ltd., Morgan Stanley, and several other long-term asset managers with concentrated positions in I-MAB-SPONSORED ADR (IMAB).
This page ranks the largest institutional IMAB shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
47
Total Reported Value
$73.34M
Largest Holder
Janus Henderson Group Plc
Largest Position
$14.81M
Insider Transactions (90d)
0
Latest Filing Quarter
Q1 2026
New Institutional Positions
66
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| Janus Henderson Group Plc | 0.01% | 6,032,650 | $14,810,156 | — | — | — | |
| Hhlr Advisors, Ltd. | 0.88% | 5,980,568 | $14,712,197 | — | — | — | |
| Morgan Stanley | 0.00% | 3,838,198 | $9,441,967 | — | — | — | |
| Siren, L.L.C. | 0.20% | 3,000,000 | $7,380,000 | — | — | — | |
| Aihc Capital Management Ltd | 4.65% | 2,262,933 | $5,566,815 | — | — | — | |
| Point72 Asset Management, L.P. | 0.01% | 1,389,403 | $3,417,931 | — | — | — | |
| Candriam S.C.A. | 0.01% | 1,132,563 | $2,786,105 | — | — | — | |
| Adage Capital Partners Gp, L.L.C. | 0.00% | 1,000,000 | $2,460,000 | — | — | — | |
| Woodline Partners Lp | 0.01% | 700,000 | $1,722,000 | — | — | — | |
| Storebrand Asset Management As | 0.00% | 42,791 | $1,661,402 | — | — | — | |
| Blackrock, Inc. | 0.00% | 627,496 | $1,543,640 | — | — | — | |
| Exome Asset Management Llc | 0.84% | 576,960 | $1,419,322 | — | — | — | |
| State Street Corp | 0.00% | 370,107 | $910,463 | — | — | — | |
| Fiera Capital Corp | 0.00% | 315,681 | $776,575 | — | — | — | |
| Barclays Plc | 0.00% | 299,299 | $736,275 | — | — | — | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 272,412 | $670,134 | — | — | — |
| Taikang Asset Management (Hong Kong) Co Ltd | 0.04% | 170,931 | $420,490 | — | — | — | |
| Citadel Advisors Llc | 0.00% | 166,616 | $409,875 | — | — | — | |
| Dimensional Fund Advisors Lp | 0.00% | 146,322 | $359,952 | — | — | — | |
| Goldman Sachs Group Inc | 0.00% | 112,463 | $276,659 | — | — | — | |
| Xtx Topco Ltd | 0.00% | 101,509 | $249,712 | — | — | — | |
| Axq Capital, Lp | 0.03% | 83,330 | $204,992 | — | — | — | |
| Dymon Asia Capital (Singapore) Pte. Ltd. | 0.04% | 80,400 | $197,784 | — | — | — | |
| Leonteq Securities Ag | 0.01% | 80,000 | $196,800 | — | — | — | |
| Bnp Paribas Financial Markets | 0.00% | 73,102 | $179,831 | — | — | — | |
| Geode Capital Management, Llc | 0.00% | 68,849 | $169,368 | — | — | — | |
| Ubs Group Ag | 0.00% | 63,541 | $156,311 | — | — | — | |
| Schonfeld Strategic Advisors Llc | 0.00% | 35,414 | $87,116 | — | — | — | |
| Invesco Ltd. | 0.00% | 28,161 | $69,276 | — | — | — | |
| Caitong International Asset Management Co., Ltd | 0.01% | 25,982 | $63,916 | — | — | — | |
| Squarepoint Ops Llc | 0.00% | 23,807 | $58,565 | — | — | — | |
| China Universal Asset Management Co., Ltd. | 0.00% | 19,919 | $49,001 | — | — | — | |
| Jump Financial, Llc | 0.00% | 19,833 | $48,789 | — | — | — | |
| Susquehanna International Group, Llp | 0.00% | 12,817 | $31,530 | — | — | — | |
| Bank Of Nova Scotia | 0.00% | 11,178 | $27,473 | — | — | — | |
| Freestone Capital Holdings, Llc | 0.00% | 10,000 | $24,600 | — | — | — | |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | 5,855 | $14,403 | — | — | — | |
| Tower Research Capital Llc (Trc) | 0.00% | 3,241 | $7,972 | — | — | — | |
| Citigroup Inc | 0.00% | 3,187 | $7,840 | — | — | — | |
| Gf Fund Management Co. Ltd. | 0.00% | 2,321 | $5,710 | — | — | — | |
| Pnc Financial Services Group, Inc. | 0.00% | 2,000 | $4,920 | — | — | — | |
| Jones Financial Companies Lllp | 0.00% | 1,104 | $2,804 | — | — | — | |
| Sbi Securities Co., Ltd. | 0.00% | 225 | $554 | — | — | — | |
| Vermillion Wealth Management, Inc. | 0.00% | 200 | $492 | — | — | — | |
| Hrt Financial Lp | 0.00% | 107,524 | $264 | — | — | — | |
| Rhumbline Advisers | 0.00% | 33 | $81 | — | — | — | |
| Eurizon Capital Sgr S.P.A. | 0.00% | 1 | $2 | — | — | — |
Frequently asked questions about IMAB
Who owns the most IMAB stock?
The largest holders of IMAB are typically major institutional investors such as asset managers and hedge funds reporting on Form 13F. The table above ranks tracked superinvestors by reported position size using the latest available filings for I-MAB-SPONSORED ADR (IMAB).
Is IMAB widely held by superinvestors?
Many widely followed stocks like IMAB appear across numerous superinvestor portfolios because of liquidity, index inclusion, and fundamentals. The holder count and table above show how broadly IMAB is represented among the institutional managers we track.
What do “Current Estimated Value”, “Gain/loss Since Filing”, and “Estimated Portfolio Performance” mean?
Current Estimated Value is reported share quantity from the latest 13F times our most recent split-adjusted U.S. session close. Gain/loss Since Filing is that estimate minus the reported 13F dollar value; Estimated Portfolio Performance is that difference as a percent of the reported value. Green means the estimate is above the filing value; red means below (not purchase cost). If many filers share the same implied filing price per share, the performance % may match across rows. These are not official fund marks or live quotes.