Axsome Therapeutics, Inc.
Axsome Therapeutics, Inc. (AXSM) Stock Ownership
Institutional vs insider vs public ownership from 13F and float data — top holders, activity, and insider trades below.
SEC 13F · FMP · AXSM · as of Sep 30, 2024
Ownership Breakdown
312
Institutional Holders
▲ 36 vs Q2
$3.48B
Total Inst. Value
▲ $197.79M vs Q2
51.46M
Shares Outstanding
freeFloat 84.66%
38.68M
13F Shares Held
▼ 2.06M vs Q2
Institutional ownership = 13F shares ÷ total outstanding. Insider % = 100 − free float. Public % = free float − institution %. Data: FMP /symbol-positions-summary + /shares-float + SEC EDGAR.
Top Institutional Holders
AXSM largest shareholders · institutional ownership
Q3 2024 · SEC 13F
Showing top 10 holders
| Holder | Shares | % Owned | Weight | Value | Reported | Change |
|---|---|---|---|---|---|---|
RTW INVESTMENTS, LP pharmaceutical preparations | 4.19M | 8.70% | 8.70% | $376.52B | Nov 14, 2024 | ▼ 444.8K |
VANGUARD GROUP INC pharmaceutical preparations | 4.00M | 8.30% | 8.30% | $359.06B | Nov 13, 2024 | ▲ 253.3K |
BLACKROCK, INC. pharmaceutical preparations | 3.40M | 7.06% | 7.06% | $305.41B | Nov 13, 2024 | NEW |
FAIRMOUNT FUNDS MANAGEMENT LLC pharmaceutical preparations | 2.36M | 4.90% | 4.90% | $212.10B | Nov 14, 2024 | — held |
FMR LLC pharmaceutical preparations | 1.09M | 2.26% | 2.26% | $97.79B | Nov 13, 2024 | ▲ 186.0K |
BVF INC/IL pharmaceutical preparations | 1.05M | 2.17% | 2.17% | $94.00B | Nov 14, 2024 | ▲ 91.0K |
RA CAPITAL MANAGEMENT, L.P. pharmaceutical preparations | 1.00M | 2.08% | 2.08% | $89.87B | Nov 14, 2024 | — held |
MACQUARIE GROUP LTD pharmaceutical preparations | 995.3K | 2.07% | 2.07% | $89.45B | Nov 14, 2024 | ▼ 78.0K |
STATE STREET CORP pharmaceutical preparations | 916.8K | 1.90% | 1.90% | $82.39B | Nov 14, 2024 | ▼ 21.7K |
GEODE CAPITAL MANAGEMENT, LLC pharmaceutical preparations | 908.5K | 1.89% | 1.89% | $81.66B | Nov 12, 2024 | ▲ 23.6K |
Data from SEC Form 13F filings. Ownership bar normalised to largest holder. Change flags: isNew / isSoldOut / changeInSharesNumber (FMP extract-analytics/holder).
Institutional Activity
Q3 2024 vs prior quarter
Q3 2024
22
Increased
+1.86M shares4
New Positions
first time holders19
Decreased
−3.02M shares0
Sold Out
fully exitedNet shares change (top 50)
1.15M
+1.86M / −3.02M
Net new holders
+7
4 new / 0 exited
Based on top 50 institutional holders by position size. Fields: isNew, isSoldOut, changeInSharesNumber (FMP extract-analytics/holder, limit=50).
Insider Buying vs Selling
AXSM insider trading · insider activity
Source: SEC Form 4
Insiders have been primarily selling shares recently. Selling may be driven by pre-scheduled Rule 10b5-1 plans rather than negative sentiment.
8
Buy transactions
9
Sell transactions
0.89
Buy/Sell ratio
$0M
Total disposed
Recent Insider Transactions
Showing 10 most recent · Common Stock only
| Name · Role | Date | Type | Shares | Price | Value | After Trans. | Filing |
|---|---|---|---|---|---|---|---|
Coleman Mark director | May 29, 2026 | Sale | 6,000 | $233.46 | $1.40M | 41.1K | Form 4 ↗ |
Coleman Mark director | Jun 1, 2026 | Sale | 6,000 | $230.30 | $1.38M | 35.1K | Form 4 ↗ |
Coleman Mark director | Jun 2, 2026 | Sale | 5,537 | $223.39 | $1.24M | 29.6K | Form 4 ↗ |
Jacobson Mark L. Chief Operating Officer | May 5, 2026 | Sale | 233 | $228.18 | $53.2K | 0 | Form 4 ↗ |
Jacobson Mark L. Chief Operating Officer | May 4, 2026 | Sale | 4,517 | $227.94 | $1.03M | 0 | Form 4 ↗ |
Jacobson Mark L. Chief Operating Officer | Apr 21, 2026 | Award | 8,669 | — | — | 8.7K | Form 4 ↗ |
TABUTEAU HERRIOT Chief Executive Officer | Apr 21, 2026 | Award | 24,081 | — | — | 24.1K | Form 4 ↗ |
Maizel Ari Chief Commercial Officer | Apr 22, 2026 | Sale | 7,500 | $182.42 | $1.37M | 0 | Form 4 ↗ |
Maizel Ari Chief Commercial Officer | Apr 21, 2026 | Award | 7,224 | — | — | 7.2K | Form 4 ↗ |
Pizzie Nick Chief Financial Officer | Apr 21, 2026 | Award | 8,188 | — | — | 8.2K | Form 4 ↗ |
Source: /insider-trading/search (FMP stable). Buy/Sell direction: acquisitionOrDisposition A=Buy, D=Sell. RSU vesting (M-Exempt) excluded from sentiment bar. All data from SEC EDGAR public filings.
About institutional & insider ownership
Axsome Therapeutics, Inc. (AXSM) is primarily owned by institutional investors, who hold approximately 75.2% of total shares outstanding. Company insiders own approximately 15.34%, while retail and public investors account for the remaining 9.49%.
The largest institutional shareholder of Axsome Therapeutics, Inc. is RTW INVESTMENTS, LP, holding approximately 4.19 million shares — equal to 8.70% of outstanding shares — as of September 30, 2024.
A total of 312 institutional investors currently hold AXSM stock, with a combined institutional value of approximately $3.48 billion as of the most recent 13F filing period.
Frequently asked questions
AXSM ownershipAxsome Therapeutics, Inc. (AXSM) is primarily owned by institutional investors, who hold approximately 75.2% of shares. The largest shareholder is RTW INVESTMENTS, LP with a 8.70% stake. Company insiders hold 15.34%. Data sourced from SEC Form 13F as of September 30, 2024.