PEAK6’s Rambus RMBS Stock Holding History

PEAK6’s Portfolio RMBS Stock Details RMBS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	–	Sell	-17,648	Closed	-$1.62M	–	3231
2025 Q4	$1.62M	Buy	+17,648	New	+$1.74M	﹤0.01%	1555
2025 Q3	–	Sell	-40,887	Closed	-$3.15M	–	3394
2025 Q2	$2.62M	Buy	40,887 +2,626	+7%	+$141K	﹤0.01%	1294
2025 Q1	$1.98M	Buy	38,261 +19,702	+106%	+$1.16M	﹤0.01%	1419
2024 Q4	$981K	Buy	+18,559	New	+$946K	﹤0.01%	1819

Other funds holding RMBS

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

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return

Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

PEAK6's RMBS Position: Q1 2026 in Review

PEAK6 sold out of Rambus (RMBS) in Q1 2026, closing a stake of 17,648 shares — an estimated $1.62M sold.

PEAK6 first reported a position in RMBS in Q4 2024 and held it in 4 quarters. The position peaked at $2.62M in Q2 2025. 557 funds tracked by Wall St. Rank hold RMBS as of Q1 2026.

PEAK6 reported no remaining Rambus position as of Q1 2026 after selling out during the quarter.
PEAK6 sold 17,648 Rambus shares in Q1 2026, an estimated $1.62M.
PEAK6 first reported a position in Rambus in Q4 2024 and held it in 4 quarters.
PEAK6's Rambus position peaked at $2.62M in Q2 2025.
557 funds tracked by Wall St. Rank held Rambus as of Q1 2026.

Based on PEAK6's 13F filing for Q1 2026, filed 14 May 2026.