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AXSM · Axsome Therapeutics, Inc.

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$199.02 -7.25 (-3.51%) At close · Aug 28
Market Cap
$10.42B
Shares
52.38M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Holders: 509
Total Value: $9,799,821,594
Total Shares: 40,037,656
Showing 1–100 of 535 holdings by value · page 1 of 6

Institutional Ownership Trend

26 quarters

Holder Concentration

Across 509 13F filers · Δ vs Mar 31, 2026
Top Holder
7.8%
Sep 2023 → Jun 2026 · range 7.8% – 11.6%
−2.2 pts
Top 5
25.6%
Sep 2023 → Jun 2026 · range 25.6% – 40.3%
−1.9 pts
Top 10
36.2%
Sep 2023 → Jun 2026 · range 36.2% – 56.6%
−5.9 pts
HHI
214
Sep 2023 → Jun 2026 · range 214 – 446
Broadly held−58

Quarterly Activity

vs Mar 31, 2026
New
139
Increased
160
Decreased
160
Sold Out
45
Unchanged
50
Holder count: +94
Institutional value: +47.9%
Shares held: +1.9%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 100 of 535
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 1579428 CUSIP 05464T104 13F (30d) 427 filings 421 filers Visit website Investor relations