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Institutional Ownership · SEC Form 13F

Who owns MSLE


Which tracked institutional funds hold MSLE, how they are positioned, and who is buying versus exiting — from SEC Form 13F-HR filings. See MSLE company fundamentals →

Ownership as of the 2026-Q1 13F filings (latest filed 2026-05-20). 13F is disclosed up to 45 days after quarter-end, so the most recent quarter fills in over the following weeks.

32
Institutional holders
8M
Shares held (tracked funds)

Conviction spread

MSLE’s largest tracked holder by dollar value, FRANKLIN RESOURCES INC, sizes it at 0.0% of its own reported 13F book, while the median holder sizes it at 0.0% of theirs — a 0.0pp gap the other way — the median holder sizes MSLE more heavily than its largest holder by dollar value does.

Book-share is each fund’s reported value in MSLE divided by its whole reported 13F book, so it is comparable across funds of different sizes and is unaffected by stock splits. A higher share means a fund has committed more of its book to the name — a starting question about conviction, not a verdict or a signal to trade.

Institutional & insider positioning

Only one quarter (2026-Q1) of 13F history is available — a quarter-over-quarter accumulation delta needs two.

We do not publish a positioning read for a window we cannot measure honestly. A starting question, not a verdict.

Institutional holders

One row per tracked fund, largest reported value first. “% of value” is the fund’s share of this security’s tracked institutional value — not of shares outstanding.

FundSharesReported value% of valueQuarter
FRANKLIN RESOURCES INC new938,666$5M11.8%2026-Q1
Siren, L.L.C. new892,074$5M11.2%2026-Q1
Vivo Capital, LLC new813,666$5M10.2%2026-Q1
Point72 Asset Management, L.P. new690,778$4M8.7%2026-Q1
Avidity Partners Management LP new387,769$3M6.9%2026-Q1
Woodline Partners LP new500,432$3M6.3%2026-Q1
SPHERA FUNDS MANAGEMENT LTD. new489,207$3M6.1%2026-Q1
SUVRETTA CAPITAL MANAGEMENT, LLC new475,000$3M6.0%2026-Q1
Soleus Capital Management, L.P. new414,359$2M5.2%2026-Q1
ADAGE CAPITAL PARTNERS GP, L.L.C. new380,354$2M4.8%2026-Q1
Saturn V Capital Management LP new350,000$2M4.4%2026-Q1
MILLENNIUM MANAGEMENT LLC new298,433$2M3.7%2026-Q1
683 Capital Management, LLC new230,833$1M2.9%2026-Q1
Empery Asset Management, LP new230,100$1M2.9%2026-Q1
ADAR1 Capital Management, LLC new222,555$1M2.8%2026-Q1
AWM Investment Company, Inc. new215,000$1M2.7%2026-Q1
Stonepine Capital Management, LLC new100,000$563K1.3%2026-Q1
CITADEL ADVISORS LLC new42,492$239K0.5%2026-Q1
HRT FINANCIAL LP new30,461$171K0.4%2026-Q1
MORGAN STANLEY new21,183$119K0.3%2026-Q1
JANE STREET GROUP, LLC new19,608$110K0.2%2026-Q1
ROYAL BANK OF CANADA new16,245$91K0.2%2026-Q1
Monashee Investment Management LLC new12,000$68K0.2%2026-Q1
GEODE CAPITAL MANAGEMENT, LLC new11,907$67K0.1%2026-Q1
Propel Bio Management, LLC new10,145$57K0.1%2026-Q1
AXQ CAPITAL, LP new10,096$57K0.1%2026-Q1
China Universal Asset Management Co., Ltd. new6,400$36K0.1%2026-Q1
NATIONAL BANK OF CANADA /FI/ new2,115$12K0.0%2026-Q1
MAI Capital Management new140$7890.0%2026-Q1
UBS Group AG new28$1580.0%2026-Q1
Federation des caisses Desjardins du Quebec new19$1060.0%2026-Q1
Caitong International Asset Management Co., Ltd new1$60.0%2026-Q1

Reading this table

Funds hold the same stock for different reasons — an index fund “holds” almost everything, an active manager sizes a name to a mandate and a benchmark, and each fund entered at its own price and time. Because 13F is filed up to 45 days after quarter-end, every row is a backward-looking snapshot; a manager may have traded since. Share-class siblings (a company’s A and C shares) are rolled up to one line so a dual-class name is never double-counted. Compare like-for-like. A large holder is not an endorsement, and a fund exiting is not a warning — this is a starting question, not a verdict.

About 13F filings

A Form 13F is a quarterly disclosure that institutional investment managers with over $100 million in US-listed equities must file with the SEC. In plain English: it is a snapshot of the long stock positions a fund held at the end of a quarter. It covers long US-listed equities only — not short positions, options, cash, or private holdings — and the funds shown are the large sample we track, not the complete 13F universe.

Learn how to read institutional ownership