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Thayer Partners’s Alnylam Pharmaceuticals ALNY Stock Holding History

Thayer Partners’s Portfolio ALNY Stock Details ALNY Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$283K Buy
940
+13
+1% +$3.92K 0.12% 87
2026
Q1 		$307K Hold
927
– – 0.15% 78
2025
Q4 		$369K Buy
+927
New +$410K 0.18% 71

Other funds holding ALNY

Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
Capital World Investors
Capital World Investors Los Angeles, California $846B AUM 46.74% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Capital Research Global Investors
Capital Research Global Investors Los Angeles, California $717B AUM 35.42% 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
T. Rowe Price Investment Management
T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return
Invesco
Invesco Atlanta, Georgia $1.26T AUM 61.52% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.38T AUM 44.17% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Thayer Partners's ALNY Position: Q2 2026 in Review

Thayer Partners increased its Alnylam Pharmaceuticals (ALNY) stake by 1.4% in Q2 2026, buying an estimated $3.92K and bringing the position to 940 shares worth $283K. The position accounts for 0.12% of the portfolio, ranked #87.

Thayer Partners first reported a position in ALNY in Q4 2025 and has held it in 3 quarters since. The position peaked at $369K in Q4 2025. 793 funds tracked by Wall St. Rank hold ALNY as of Q2 2026.

  • Thayer Partners held 940 shares of Alnylam Pharmaceuticals worth $283K as of Q2 2026.
  • Thayer Partners bought 13 Alnylam Pharmaceuticals shares in Q2 2026, an estimated $3.92K.
  • Alnylam Pharmaceuticals made up 0.12% of Thayer Partners's portfolio in Q2 2026, its #87 holding.
  • Thayer Partners first reported a position in Alnylam Pharmaceuticals in Q4 2025 and has held it in 3 quarters since.
  • Thayer Partners's Alnylam Pharmaceuticals position peaked at $369K in Q4 2025.
  • 793 funds tracked by Wall St. Rank held Alnylam Pharmaceuticals as of Q2 2026.

Based on Thayer Partners's 13F filing for Q2 2026, filed 31 Jul 2026.