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Northwestern Mutual Investment Management Company’s Rambus RMBS Stock Holding History

Northwestern Mutual Investment Management Company’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 		$2.07M Buy
24,116
+31
+0.1% +$3.09K 0.03% 295
2025
Q4 		$2.21M Buy
24,085
+103
+0.4% +$10.1K 0.03% 265
2025
Q3 		$2.5M Hold
23,982
– – 0.04% 214
2025
Q2 		$1.54M Buy
23,982
+286
+1% +$15.3K 0.02% 374
2025
Q1 		$1.23M Buy
23,696
+10
+0% +$587 0.02% 461
2024
Q4 		$1.25M Sell
23,686
-204
-0.9% -$10.4K 0.03% 459
2024
Q3 		$1.01M Sell
23,890
-167
-0.7% -$8.09K 0.02% 564
2024
Q2 		$1.41M Buy
24,057
+78
+0.3% +$4.46K 0.04% 372
2024
Q1 		$1.48M Buy
23,979
+61
+0.3% +$3.86K 0.04% 356
2023
Q4 		$1.63M Buy
+23,918
New +$1.49M 0.04% 280

Other funds holding RMBS

BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
VPM
Vanguard Portfolio Management Malvern, Pennsylvania $1.91T AUM
Invesco
Invesco Atlanta, Georgia $1.02T AUM 30.18% 1-Year Est. Return
VCM
Vanguard Capital Management Malvern, Pennsylvania $4.04T 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 $865B AUM 30.76% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $1.9T AUM 41.92% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $145B AUM 22.78% 1-Year Est. Return
EIG
EdgePoint Investment Group Toronto, Ontario, Canada $12.5B AUM 31.7% 1-Year Est. Return

Northwestern Mutual Investment Management Company's RMBS Position: Q1 2026 in Review

Northwestern Mutual Investment Management Company increased its Rambus (RMBS) stake by 0.13% in Q1 2026, buying an estimated $3.09K and bringing the position to 24,116 shares worth $2.07M. The position accounts for 0.03% of the portfolio, ranked #295.

Northwestern Mutual Investment Management Company first reported a position in RMBS in Q4 2023 and has held it in 10 quarters since. The position peaked at $2.5M in Q3 2025. 554 funds tracked by Wall St. Rank hold RMBS as of Q1 2026.

  • Northwestern Mutual Investment Management Company held 24,116 shares of Rambus worth $2.07M as of Q1 2026.
  • Northwestern Mutual Investment Management Company bought 31 Rambus shares in Q1 2026, an estimated $3.09K.
  • Rambus made up 0.03% of Northwestern Mutual Investment Management Company's portfolio in Q1 2026, its #295 holding.
  • Northwestern Mutual Investment Management Company first reported a position in Rambus in Q4 2023 and has held it in 10 quarters since.
  • Northwestern Mutual Investment Management Company's Rambus position peaked at $2.5M in Q3 2025.
  • 554 funds tracked by Wall St. Rank held Rambus as of Q1 2026.

Based on Northwestern Mutual Investment Management Company's 13F filing for Q1 2026, filed 8 May 2026.