Assenagon Asset Management S.A. HSTM — HEALTHSTREAM INC

Ownership history in Assenagon Asset Management S.A.  ·  23 quarters on record

AI Ownership Summary

Assenagon Asset Management S.A. reported HEALTHSTREAM INC (HSTM) in 23 quarterly 13F filings from 2023 Q4 through 2025 Q3. Peak portfolio weight reached 0.01% in 2024 Q3. The latest visible filing shows HSTM at 0.00% 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 HSTM ownership page tells you

This page is designed to answer the real investor question behind a 13F filing: how meaningful was Assenagon Asset Management S.A.'s position in HEALTHSTREAM 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
2025 Q3

HSTM was reported at 0.00% of portfolio in the most recent visible filing.

High-water mark
Peak Conviction
0.01% in 2024 Q3

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

Time in book
Holding Window
2023 Q4 to 2025 Q3

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.

HSTM stock page Assenagon Asset Management S.A. fund profile Assenagon Asset Management S.A. full holdings
How Assenagon Asset Management S.A. held HSTM — position size vs. price
% of Fund (quarterly)    HSTM price (quarter-end, indexed to 100)    SPY (indexed to 100)    QQQ (indexed to 100)
📋 Quarterly Holdings History 6 quarters  ▾
Quarter Action Sold % After 3M Timing Shares Change Chg % % of Fund Mkt Value Filed Price (Filed)
2025 Q3 REDUCED 54.6% -17.7% ✅ 44,775 -53,884 -54.6% 0.00% $1.3M 2025-10-07 $26.81
2024 Q4 REDUCED 51.1% +1.3% ❌ 98,659 -102,942 -51.1% 0.01% $3.1M 2025-01-14 $31.28
2024 Q3 ADDED — — — 201,601 +54,775 +37.3% 0.01% $5.8M 2024-10-23 $28.43
2024 Q2 ADDED — — — 146,826 +54,227 +58.6% 0.01% $4.1M 2024-07-18 $30.10
2024 Q1 REDUCED 5.3% +3.5% ❌ 92,599 -5,215 -5.3% 0.01% $2.5M 2024-04-24 $25.69
2023 Q4 REDUCED 26.8% -3.2% ✅ 97,814 -35,898 -26.8% 0.01% $2.6M 2024-01-17 $26.37
17 older quarters hidden  —  Sign in free or upgrade to Premium to see full history

🏢 Other funds also holding HSTM

As of 2026 Q1 — sorted by position size

Inspire Investing, LLC 3Y 7Y 0.04% NJ State Employees Deferred Compensation Plan 3Y 7Y 0.03% GAMMA Investing LLC 0.02% Robeco Institutional Asset Management B.V. 3Y 7Y 0.01% Diversified Trust Co 3Y 7Y 0.01% Louisiana State Employees Retirement System 3Y 7Y 0.0% State of Alaska, Department of Revenue 3Y 7Y 0.0% Versant Capital Management, Inc 3Y 7Y 0.0% STRS OHIO 3Y 7Y 0.0% SG Americas Securities, LLC 3Y 7Y 0.0%

FAQ About Assenagon Asset Management S.A. and HSTM

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

How long has Assenagon Asset Management S.A. reported owning HSTM?

Assenagon Asset Management S.A. reported HSTM across 6 quarterly 13F filings, from 2023 Q4 through 2025 Q3.

What was the largest reported HSTM position in Assenagon Asset Management S.A.'s portfolio?

The largest reported portfolio weight for HSTM was 0.01% in 2024 Q3.

What is the latest reported HSTM position on this page?

The most recent filing on this page is 2025 Q3, when Assenagon Asset Management S.A. reported 44,775 shares, equal to 0.00% of portfolio, with an estimated market value of $1.3M.

What does the chart on this HSTM ownership page compare?

The chart compares Assenagon Asset Management S.A.'s quarterly HSTM 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 Assenagon Asset Management S.A. time their HSTM position?

Based on 13F filing dates vs. subsequent HSTM price moves, Assenagon Asset Management S.A. correctly timed 11 out of 19 reported position changes (58%). The annualised alpha on HSTM relative to SPY over the holding period was -15.6%.

← Back to Assenagon Asset Management S.A. Holdings