FRONTIER CAPITAL MANAGEMENT CO LLC AXSM — AXSOME THERAPEUTICS INC

Ownership history in FRONTIER CAPITAL MANAGEMENT CO LLC  ·  15 quarters on record

AI Ownership Summary

FRONTIER CAPITAL MANAGEMENT CO LLC reported AXSOME THERAPEUTICS INC (AXSM) in 15 quarterly 13F filings from 2024 Q1 through 2026 Q2. Peak portfolio weight reached 0.58% in 2026 Q2. The latest visible filing shows AXSM at 0.58% of the fund.

This page tracks quarterly shares, estimated market value, portfolio weight, filing dates, and disclosure-aligned stock prices directly from SEC EDGAR 13F filings. Older history is available after unlock; the visible window still shows the most recent pattern.

What this AXSM ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was FRONTIER CAPITAL MANAGEMENT CO LLC's position in AXSOME THERAPEUTICS INC, and how did that conviction change over time? You can read the holding window, peak weight, latest reported size, disclosure timing, and quarter-by-quarter changes without piecing the story together from raw SEC rows.

Freshest filing
Latest Reported Filing
2026 Q2

AXSM was reported at 0.58% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.58% in 2026 Q2

Peak weight helps separate a token disclosure from a real conviction holding the fund genuinely cared about.

Time in book
Holding Window
2024 Q1 to 2026 Q2

Longer holding windows often tell a very different story from short-lived tactical trades or one-quarter experiments.

Decision context
Why It Matters
Position size beats headlines

Knowing that a fund owned a stock is useful. Knowing whether it was a 0.20% placeholder or a true high-conviction position is where the signal actually starts.

AXSM stock page FRONTIER CAPITAL MANAGEMENT CO LLC fund profile FRONTIER CAPITAL MANAGEMENT CO LLC full holdings
How FRONTIER CAPITAL MANAGEMENT CO LLC held AXSM — position size vs. price
% of Fund (quarterly)    AXSM price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 10 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2026 Q2 ADDED — — — 254,280 +51,214 +25.2% 0.58% $62.2M 2026-08-14 $213.67
2026 Q1 ADDED — — — 203,066 +45,375 +28.8% 0.35% $34.3M 2026-05-15 $227.72
2025 Q4 ADDED — — — 157,691 +31,309 +24.8% 0.31% $28.8M 2026-02-17 $183.30
2025 Q3 ADDED — — — 126,382 +97,540 +338.2% 0.14% $15.3M 2025-11-14 $139.69
2025 Q2 REDUCED 33.3% +12.7% ❌ 28,842 -14,419 -33.3% 0.03% $3.0M 2025-08-14 $108.75
2025 Q1 REDUCED 18.0% -10.5% ✅ 43,261 -9,507 -18.0% 0.06% $5.0M 2025-05-15 $107.22
2024 Q4 REDUCED 56.2% +37.8% ❌ 52,768 -67,772 -56.2% 0.04% $4.5M 2025-02-14 $131.15
2024 Q3 ADDED — — — 120,540 +24,513 +25.5% 0.10% $10.8M 2024-11-14 $97.37
2024 Q2 REDUCED 8.8% +11.6% ❌ 96,027 -9,317 -8.8% 0.08% $7.7M 2024-08-14 $84.83
2024 Q1 ADDED — — — 105,344 +10,456 +11.0% 0.08% $8.4M 2024-05-15 $75.93
5 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding AXSM

As of 2026 Q2 — sorted by position size

ALETHEA CAPITAL MANAGEMENT, LLC 3Y 7Y 65.78% SUPERSTRING CAPITAL MANAGEMENT LP 8.33% Tri Locum Partners LP 3Y 6.6% First Turn Management, LLC 5.72% Panoramic Capital, LLC 4.63% PFM Health Sciences, LP 3Y 7Y 4.61% IRIDIAN ASSET MANAGEMENT LLC/CT 3Y 7Y 4.03% Ally Bridge Group (NY) LLC 3Y 3.57% Occam Crest Management LP 3.52% Science & Technology Partners, L.P. 3.01%

FAQ About FRONTIER CAPITAL MANAGEMENT CO LLC and AXSM

These are the practical questions this page is built to answer before you even open the full history table.

How long has FRONTIER CAPITAL MANAGEMENT CO LLC reported owning AXSM?

FRONTIER CAPITAL MANAGEMENT CO LLC reported AXSM across 10 quarterly 13F filings, from 2024 Q1 through 2026 Q2.

What was the largest reported AXSM position in FRONTIER CAPITAL MANAGEMENT CO LLC's portfolio?

The largest reported portfolio weight for AXSM was 0.58% in 2026 Q2.

What is the latest reported AXSM position on this page?

The most recent filing on this page is 2026 Q2, when FRONTIER CAPITAL MANAGEMENT CO LLC reported 254,280 shares, equal to 0.58% of portfolio, with an estimated market value of $62.2M.

What does the chart on this AXSM ownership page compare?

The chart compares FRONTIER CAPITAL MANAGEMENT CO LLC's quarterly AXSM portfolio weight with the stock's indexed share price, so you can see whether the fund was building, trimming, or holding the position as price moved.

How well did FRONTIER CAPITAL MANAGEMENT CO LLC time their AXSM position?

Based on 13F filing dates vs. subsequent AXSM price moves, FRONTIER CAPITAL MANAGEMENT CO LLC correctly timed 8 out of 14 reported position changes (57%). The annualised alpha on AXSM relative to SPY over the holding period was +16.7%.

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