Magnite
MGNI
217 hedge funds and large institutions have $966M invested in Magnite in 2023 Q4 according to their latest regulatory filings, with 32 funds opening new positions, 61 increasing their positions, 71 reducing their positions, and 28 closing their positions.
80% more funds holding in top 10
Funds holding in top 10: 5 → 9 (+4)
24% more capital invested
Capital invested by funds: $781M → $966M (+$185M)
14% more first-time investments, than exits
New positions opened: 32 | Existing positions closed: 28
1% more funds holding
Funds holding: 214 → 217 (+3)
0.56% less ownership
Funds ownership: 75.56% → 75% (-0.56%)
14% less repeat investments, than reductions
Existing positions increased: 61 | Existing positions reduced: 71
37% less call options, than puts
Call options by funds: $16.3M | Put options by funds: $25.7M
Top Buyers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
Fidelity Investments
Boston,
Massachusetts
|
+$20.3M |
| 2 |
Morgan Stanley
New York
|
+$8.4M |
| 3 |
BlackRock
New York
|
+$6.35M |
| 4 |
AACP
Advantage Alpha Capital Partners
San Francisco,
California
|
+$4M |
| 5 |
GCP
GSA Capital Partners
London,
United Kingdom
|
+$3.8M |
Top Sellers
| Rank | Fund | Capital Flow |
|---|---|---|
| 1 |
RCMNY
Rubric Capital Management (New York)
New York
|
-$30.2M |
| 2 |
DCM
Driehaus Capital Management
Chicago,
Illinois
|
-$6M |
| 3 |
Parallax Volatility Advisers
San Francisco,
California
|
-$4.61M |
| 4 |
GIM
Granahan Investment Management
Waltham,
Massachusetts
|
-$3.77M |
| 5 |
UBS AM
Chicago,
Illinois
|
-$3.68M |
MGNI Hedge Fund Activity: Q4 2023 in Review
217 of the 6,859 institutional investors tracked by Wall St. Rank reported a position in Magnite (MGNI) for Q4 2023, worth a combined $966M — up 24% from $781M a quarter earlier.
Buyers outnumbered sellers: 32 funds opened new MGNI positions and 28 closed out — a net gain of 4 holders — while 61 added to existing stakes and 71 trimmed.
The largest buyer was Fidelity Investments, adding an estimated $20.3M. The largest seller was Rubric Capital Management (New York), exiting entirely with an estimated $30.2M sold.
- 217 institutional investors held Magnite (MGNI) as of Q4 2023, up from 214 in Q3 2023.
- Funds reported $966M of Magnite stock for Q4 2023, up 24% quarter-over-quarter.
- 32 funds opened new Magnite positions in Q4 2023 and 28 closed out, a net change of +4 holders.
- The largest Magnite buyer in Q4 2023 was Fidelity Investments, an estimated $20.3M added.
- The largest Magnite seller in Q4 2023 was Rubric Capital Management (New York), an estimated $30.2M sold.
Based on aggregated 13F filings for Q4 2023.