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CenterBook Partners’s Rambus RMBS Stock Holding History

CenterBook Partners’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
Q2 		$925K Buy
6,968
+1,556
+29% +$202K 0.05% 371
2026
Q1 		$466K Buy
+5,412
New +$540K 0.03% 498
2022
Q2 		– Sell
-10,564
Closed -$337K – 421
2022
Q1 		$337K Buy
10,564
+3,660
+53% +$101K 0.12% 267
2021
Q4 		$203K Buy
+6,904
New +$176K 0.12% 268

Other funds holding RMBS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
T. Rowe Price Associates
T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return
JP Morgan Chase
JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $552B AUM 44.19% 1-Year Est. Return

CenterBook Partners's RMBS Position: Q2 2026 in Review

CenterBook Partners increased its Rambus (RMBS) stake by 29% in Q2 2026, buying an estimated $202K and bringing the position to 6,968 shares worth $925K. The position accounts for 0.05% of the portfolio, ranked #371.

CenterBook Partners first reported a position in RMBS in Q4 2021 and has held it in 4 quarters since. 618 funds tracked by Wall St. Rank hold RMBS as of Q2 2026.

  • CenterBook Partners held 6,968 shares of Rambus worth $925K as of Q2 2026.
  • CenterBook Partners bought 1,556 Rambus shares in Q2 2026, an estimated $202K.
  • Rambus made up 0.05% of CenterBook Partners's portfolio in Q2 2026, its #371 holding.
  • CenterBook Partners first reported a position in Rambus in Q4 2021 and has held it in 4 quarters since.
  • 618 funds tracked by Wall St. Rank held Rambus as of Q2 2026.

Based on CenterBook Partners's 13F filing for Q2 2026, filed 11 Aug 2026.