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Granahan Investment Management’s AnaptysBio ANAB Stock Holding History

Granahan Investment Management’s Portfolio ANAB Stock Details ANAB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$5.13M Buy
75,962
+9,780
+15% +$593K 0.18% 113
2026
Q1 		$3.67M Sell
66,182
-59,673
-47% -$3.21M 0.18% 120
2025
Q4 		$6.1M Sell
125,855
-21,918
-15% -$854K 0.26% 91
2025
Q3 		$4.52M Buy
147,773
+16,118
+12% +$370K 0.19% 104
2025
Q2 		$2.92M Sell
131,655
-14,836
-10% -$311K 0.12% 123
2025
Q1 		$2.72M Buy
146,491
+40,412
+38% +$674K 0.14% 124
2024
Q4 		$1.4M Buy
+106,079
New +$2.57M 0.06% 154

Other funds holding ANAB

EC
EcoR1 Capital San Francisco, California $2.06B AUM 215.32% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
TCM
Tang Capital Management San Diego, California $2.2B AUM 156.35% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
AAA
Affinity Asset Advisors New York $2.21B AUM 431.26% 1-Year Est. Return
S
Sanofi Paris, France $534M AUM 205.96% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return
6CM
683 Capital Management New York $2.04B AUM 94.26% 1-Year Est. Return

Granahan Investment Management's ANAB Position: Q2 2026 in Review

Granahan Investment Management increased its AnaptysBio (ANAB) stake by 15% in Q2 2026, buying an estimated $593K and bringing the position to 75,962 shares worth $5.13M. The position accounts for 0.18% of the portfolio, ranked #113.

Granahan Investment Management first reported a position in ANAB in Q4 2024 and has held it in 7 quarters since. The position peaked at $6.1M in Q4 2025. 213 funds tracked by Wall St. Rank hold ANAB as of Q2 2026.

  • Granahan Investment Management held 75,962 shares of AnaptysBio worth $5.13M as of Q2 2026.
  • Granahan Investment Management bought 9,780 AnaptysBio shares in Q2 2026, an estimated $593K.
  • AnaptysBio made up 0.18% of Granahan Investment Management's portfolio in Q2 2026, its #113 holding.
  • Granahan Investment Management first reported a position in AnaptysBio in Q4 2024 and has held it in 7 quarters since.
  • Granahan Investment Management's AnaptysBio position peaked at $6.1M in Q4 2025.
  • 213 funds tracked by Wall St. Rank held AnaptysBio as of Q2 2026.

Based on Granahan Investment Management's 13F filing for Q2 2026, filed 14 Aug 2026.