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Callan Family Office’s Repligen RGEN Stock Holding History

Callan Family Office’s Portfolio RGEN Stock Details RGEN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q2 		$643K Sell
4,712
-3,911
-45% -$481K 0.01% 731
2026
Q1 		$1.02M Buy
8,623
+248
+3% +$34.6K 0.02% 550
2025
Q4 		$1.37M Buy
8,375
+4,697
+128% +$736K 0.03% 454
2025
Q3 		$492K Sell
3,678
-532
-13% -$64.6K 0.02% 541
2025
Q2 		$524K Buy
4,210
+1,299
+45% +$165K 0.02% 567
2025
Q1 		$370K Sell
2,911
-105
-3% -$16.2K 0.03% 387
2024
Q4 		$434K Buy
+3,016
New +$432K 0.03% 401

Other funds holding RGEN

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
UCFA
United Capital Financial Advisors Irving, Texas $18.2B AUM 22.02% 1-Year Est. Return
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.22T AUM
MC
Maverick Capital Dallas, Texas $11.3B AUM 76.6% 1-Year Est. Return
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
Massachusetts Financial Services
Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return
WA
Wasatch Advisors Salt Lake City, Utah $15.3B AUM 25.06% 1-Year Est. Return

Callan Family Office's RGEN Position: Q2 2026 in Review

Callan Family Office reduced its Repligen (RGEN) stake by 45% in Q2 2026, selling an estimated $481K and leaving 4,712 shares worth $643K. The position accounts for 0.01% of the portfolio, ranked #731.

Callan Family Office first reported a position in RGEN in Q4 2024 and has held it in 7 quarters since. The position peaked at $1.37M in Q4 2025. 478 funds tracked by Wall St. Rank hold RGEN as of Q2 2026.

  • Callan Family Office held 4,712 shares of Repligen worth $643K as of Q2 2026.
  • Callan Family Office sold 3,911 Repligen shares in Q2 2026, an estimated $481K.
  • Repligen made up 0.01% of Callan Family Office's portfolio in Q2 2026, its #731 holding.
  • Callan Family Office first reported a position in Repligen in Q4 2024 and has held it in 7 quarters since.
  • Callan Family Office's Repligen position peaked at $1.37M in Q4 2025.
  • 478 funds tracked by Wall St. Rank held Repligen as of Q2 2026.

Based on Callan Family Office's 13F filing for Q2 2026, filed 11 Aug 2026.