MRSNMERSANA THERAPEUTICS INC
CUSIP 59045L205 · Yahoo Finance ↗ · Google Finance ↗
Mersana Therapeutics Inc (MRSN) has 2 institutional holders in Filings Flow’s 13F database, together reporting 18.5K shares worth $535,176 as of Q1 2026. The largest reported holders are Nextech Invest, Ltd., Bain Capital Life Sciences Investors, LLC, and Vanguard Group Inc.
Institutional Holders
2
Q1 2026
Reported Value
$535,176
Ticker
MRSN
Quarters Tracked
2
Ownership Trend
Institutional holders
Total reported value
Holders
Mixed quarters
| Manager | % of Portfolio | Value | Shares | Quarter |
|---|---|---|---|---|
| Alamea Verwaltungs GmbH$135M AUM | 2.25% | $3M | 24.2K | Q4 2025OLDER |
| Rangeley Capital, LLC$103M AUM | 1.37% | $2M | 57.1K | Q4 2025OLDER |
| Nextech Invest, Ltd.$1.4B AUM | 1.35% | $14M | 482.7K | Q4 2025OLDER |
| Bain Capital Life Sciences Investors, LLC$1.1B AUM | 0.77% | $10M | 346.5K | Q4 2025OLDER |
| EQUITEC PROPRIETARY MARKETS, LLC$187M AUM | 0.34% | $595,755 | 20.6K | Q4 2025OLDER |
| Yakira Capital Management, Inc.$342M AUM | 0.32% | $944,940 | 32.7K | Q4 2025OLDER |
| Rock Springs Capital Management LP$1.7B AUM | 0.23% | $4M | 152.6K | Q4 2025OLDER |
| Knott David M Jr$168M AUM | 0.20% | $437,762 | 111.7K | Q4 2025OLDER |
| Affinity Asset Advisors, LLC$1.9B AUM | 0.16% | $3M | 100.0K | Q4 2025OLDER |
| 5AM Venture Management, LLC$360M AUM | 0.15% | $405,072 | 52.2K | Q3 2025OLDER |
| SILVERARC CAPITAL MANAGEMENT, LLC$980M AUM | 0.14% | $1M | 133.6K | Q3 2025OLDER |
| CREDIT INDUSTRIEL ET COMMERCIAL$1.3B AUM | 0.09% | $1M | 41.4K | Q4 2025OLDER |
| DELTEC ASSET MANAGEMENT LLC$545M AUM | 0.09% | $520,740 | 18.0K | Q4 2025OLDER |
| 683 Capital Management, LLC$1.9B AUM | 0.04% | $776,000 | 100.0K | Q3 2025OLDER |
| Groupe la Francaise$7.3B AUM | 0.02% | $2M | 61.5K | Q4 2025OLDER |
| Schonfeld Strategic Advisors LLC$14.2B AUM | 0.01% | $2M | 273.6K | Q3 2025OLDER |
| GABELLI FUNDS LLC$14.8B AUM | 0.01% | $1M | 47.3K | Q4 2025OLDER |
| XTX Topco Ltd$5.8B AUM | 0.01% | $345,656 | 11.9K | Q4 2025OLDER |
| GAMCO INVESTORS, INC. ET AL$10.2B AUM | 0.00% | $289,300 | 10.0K | Q4 2025OLDER |
| Voleon Capital Management LP$4.6B AUM | 0.00% | $102,432 | 13.2K | Q3 2025OLDER |
| DRW Securities, LLC$7.2B AUM | 0.00% | $107,483 | 13.9K | Q3 2025OLDER |
| OMERS ADMINISTRATION Corp$15.6B AUM | 0.00% | $228,547 | 7.9K | Q4 2025OLDER |
| MACKENZIE FINANCIAL CORP$83.3B AUM | 0.00% | $967,437 | 33.8K | Q4 2025OLDER |
| IEQ CAPITAL, LLC$21.5B AUM | 0.00% | $374,788 | 13.0K | Q4 2025OLDER |
| RENAISSANCE TECHNOLOGIES LLC$63.9B AUM | 0.00% | $686,488 | 88.5K | Q3 2025OLDER |
| MILLENNIUM MANAGEMENT LLC$240.3B AUM | 0.00% | $2M | 63.3K | Q4 2025OLDER |
| AQR CAPITAL MANAGEMENT LLC$218.4B AUM | 0.00% | $1M | 37.3K | Q4 2025OLDER |
| China Universal Asset Management Co., Ltd.$1.3B AUM | 0.00% | $6,790 | 875 | Q3 2025OLDER |
| TWO SIGMA INVESTMENTS, LP$123.9B AUM | 0.00% | $238,139 | 30.7K | Q3 2025OLDER |
| Point72 Asset Management, L.P.$78.1B AUM | 0.00% | $299,831 | 10.4K | Q4 2025OLDER |
| Tower Research Capital LLC (TRC)$3.8B AUM | 0.00% | $10,878 | 376 | Q4 2025OLDER |
| CWM, LLC$38.1B AUM | 0.00% | $66,000 | 2.3K | Q4 2025OLDER |
| BANK OF AMERICA CORP /DE/$1.37T AUM | 0.00% | $2M | 65.7K | Q4 2025OLDER |
| FLAGSHIP HARBOR ADVISORS, LLC$2.3B AUM | 0.00% | $2,198 | 76 | Q4 2025OLDER |
| CITADEL ADVISORS LLC$618.5B AUM | 0.00% | $650,722 | 22.5K | Q4 2025OLDER |
| VANGUARD GROUP INC$6.90T AUM | 0.00% | $6M | 210.3K | Q4 2025OLDER |
| GEODE CAPITAL MANAGEMENT, LLC$1.61T AUM | 0.00% | $1M | 43.9K | Q4 2025OLDER |
| MARSHALL WACE, LLP$100.4B AUM | 0.00% | $68,091 | 227.0K | Q2 2025OLDER |
| GROUP ONE TRADING LLC$52.2B AUM | 0.00% | $31,042 | 1.1K | Q4 2025OLDER |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP$893.3B AUM | 0.00% | $445,522 | 15.4K | Q4 2025OLDER |
| SBI Securities Co., Ltd.$3.6B AUM | 0.00% | $1,533 | 53 | Q4 2025OLDER |
| BlackRock, Inc.$5.72T AUM | 0.00% | $2M | 69.2K | Q4 2025OLDER |
| MORGAN STANLEY$1.67T AUM | 0.00% | $535,089 | 18.5K | Q1 2026 |
| NORTHERN TRUST CORP$756.6B AUM | 0.00% | $248,393 | 8.6K | Q4 2025OLDER |
| STATE STREET CORP$2.90T AUM | 0.00% | $565,379 | 19.5K | Q4 2025OLDER |
| Arax Advisory Partners$3.5B AUM | 0.00% | $1,218 | 157 | Q3 2025OLDER |
| BNP PARIBAS FINANCIAL MARKETS$205.8B AUM | 0.00% | $31,534 | 1.1K | Q4 2025OLDER |
| GF FUND MANAGEMENT CO. LTD.$6.0B AUM | 0.00% | $729 | 94 | Q3 2025OLDER |
| HUNTINGTON NATIONAL BANK$18.1B AUM | 0.00% | $926 | 32 | Q4 2025OLDER |
| Mirae Asset Global Investments Co., Ltd.$299.3B AUM | 0.00% | $1,498 | 193 | Q3 2025OLDER |
| OSAIC HOLDINGS, INC.$68.3B AUM | 0.00% | $2,980 | 103 | Q4 2025OLDER |
| IFP Advisors, Inc$4.8B AUM | 0.00% | $87 | 3 | Q1 2026 |
| UBS Group AG$666.3B AUM | 0.00% | $6,394 | 221 | Q4 2025OLDER |
| ROYAL BANK OF CANADA$570.1B AUM | 0.00% | $5,000 | 168 | Q4 2025OLDER |
| CITIGROUP INC$234.5B AUM | 0.00% | $823 | 106 | Q3 2025OLDER |
| BARCLAYS PLC$416.3B AUM | 0.00% | $1,536 | 198 | Q3 2025OLDER |
| WELLS FARGO & COMPANY/MN$530.3B AUM | 0.00% | $1,157 | 40 | Q4 2025OLDER |
| JPMORGAN CHASE & CO$1.56T AUM | 0.00% | $3,240 | 112 | Q4 2025OLDER |
| DANSKE BANK A/S$41.5B AUM | 0.00% | $29 | 1 | Q4 2025OLDER |
| FMR LLC$1.90T AUM | 0.00% | $231 | 8 | Q4 2025OLDER |
Holdings are reported up to 45 days after quarter end. Share counts are as filed and not adjusted for stock splits.