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Of the 10 tracked institutions holding MPLT, 4 have a 3-year clone track record — 4 of them beat the S&P. Average holder's clone alpha: +5.1pt. It's a gauge of who owns the name, not just how many.
Among the 10 tracked institutional investors we monitor, MPLT (MAPLIGHT THERAPEUTICS INC) is held with a combined value of $183.79M across 5,571,594 shares. The largest holder is PRICE T ROWE ASSOCIATES INC /MD/ with a position worth $51.00M. 4 funds opened new positions in the most recent quarter. 4 funds increased their holdings. 1 fund reduced its position.
Total Institutional Value
$183.79M
Total Shares Held
5,571,594
Institutional Holders
10
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | PRICE T ROWE ASSOCIATES INC /MD/ | $51.00M | 0.01% | +1162.5% |
| 2 | BlackRock, Inc. | $36.74M | 0.00% | -23.5% |
| 3 | STATE STREET CORP | $30.54M | 0.00% | +151.3% |
| 4 | FMR LLC | $29.52M | 0.00% | +302.7% |
| 5 | VANGUARD GROUP INC | $15.28M | 0.00% | New |
| 6 | BAKER BROS. ADVISORS LP | $13.07M | 0.07% | - |
| 7 | MILLENNIUM MANAGEMENT LLC | $4.62M | 0.00% | New |
| 8 | WELLINGTON MANAGEMENT GROUP LLP | $1.86M | 0.00% | +12.4% |
| 9 | CITADEL ADVISORS LLC | $922.92K | 0.00% | New |
| 10 | RENAISSANCE TECHNOLOGIES LLC | $248.62K | 0.00% | New |
As of the latest SEC 13F filings, PRICE T ROWE ASSOCIATES INC /MD/ is the largest institutional holder of MPLT with a position worth $51.00M, representing 0.01% of their portfolio. In total, 10 institutional investors hold MPLT with a combined value of $183.79M.
In the most recent quarter, 4 funds opened a new position in MPLT. Additionally, 4 increased their holdings and 1 reduced their positions.
Institutional investors hold $183.79M worth of MPLT stock across 10 positions. The largest institutional holder is PRICE T ROWE ASSOCIATES INC /MD/ with $51.00M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For MPLT, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their MPLT positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
| 2026-08-18 |
| 47.9% | 2026-08-03 |
| 4.9% | 2026-07-31 |
SEC Schedule 13D (activist) and 13G (passive) filings for MPLT. Filed when an investor acquires 5%+ ownership.
Last Close
$7.70
2026-10-16
YTD
-54.1%
0% of 52-week range
