Ray Dalio’s Magnite MGNI Stock Holding History

Ray Dalio’s Portfolio MGNI Stock Details MGNI Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-145,187	Closed	-$2.36M	–	1144
2025 Q4	$2.36M	Sell	145,187 -484	-0.3%	-$8.03K	0.01%	729
2025 Q3	$3.17M	Buy	+145,671	New	+$3.44M	0.01%	605

Other funds holding MGNI

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $535B AUM 26.23% 1-Year Est. Return

VPM

Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Capital Research Global Investors Los Angeles, California $645B AUM 30.41% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

American Century Companies Kansas City, Missouri $194B AUM 35% 1-Year Est. Return

Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return

Nuveen Charlotte, North Carolina $369B AUM 31.66% 1-Year Est. Return

Ray Dalio's MGNI Position: Q1 2026 in Review

Ray Dalio sold out of Magnite (MGNI) in Q1 2026, closing a stake of 145,187 shares — an estimated $2.36M sold.

Ray Dalio first reported a position in MGNI in Q3 2025 and held it in 2 quarters. The position peaked at $3.17M in Q3 2025. 296 funds tracked by Wall St. Rank hold MGNI as of Q1 2026.

Ray Dalio reported no remaining Magnite position as of Q1 2026 after selling out during the quarter.
Ray Dalio sold 145,187 Magnite shares in Q1 2026, an estimated $2.36M.
Ray Dalio first reported a position in Magnite in Q3 2025 and held it in 2 quarters.
Ray Dalio's Magnite position peaked at $3.17M in Q3 2025.
296 funds tracked by Wall St. Rank held Magnite as of Q1 2026.

Based on Bridgewater Associates's 13F filing for Q1 2026, filed 15 May 2026.