Sector Gamma AS
TNDM icon

Sector Gamma AS’s Tandem Diabetes Care TNDM Stock Holding History

Sector Gamma AS’s Portfolio TNDM Stock Details TNDM Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$4.36M Hold
267,091
– – 0.9% 33
2026
Q2 		$4.03M Hold
267,091
– – 0.87% 35
2026
Q1 		$5.12M Hold
267,091
– – 1.21% 27
2025
Q4 		$5.87M Sell
267,091
-2,451
-0.9% -$44.2K 1.34% 25
2025
Q3 		$3.27M Buy
269,542
+59,019
+28% +$799K 0.81% 36
2025
Q2 		$3.92M Buy
210,523
+30,000
+17% +$594K 1.28% 31
2025
Q1 		$3.46M Buy
+180,523
New +$5.28M 1.11% 25

Other funds holding TNDM

BlackRock
BlackRock New York $6.79T AUM 37.06% 1-Year Est. Return
Vanguard Portfolio Management
Vanguard Portfolio Management Malvern, Pennsylvania $2.21T AUM
Vanguard Capital Management
Vanguard Capital Management Malvern, Pennsylvania $4.76T AUM
GW&K Investment Management
GW&K Investment Management Boston, Massachusetts $11.8B AUM 29.45% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.44T AUM 36.12% 1-Year Est. Return
UBS Group
UBS Group Zurich, Switzerland $765B AUM 28.39% 1-Year Est. Return
Paradice Investment Management
Paradice Investment Management Denver, Colorado $594M AUM 28.38% 1-Year Est. Return
BNP Paribas Financial Markets
BNP Paribas Financial Markets Paris, France $294B AUM 47.59% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.32T AUM 44.66% 1-Year Est. Return

Sector Gamma AS's TNDM Position: Q3 2026 in Review

Sector Gamma AS held its Tandem Diabetes Care (TNDM) position steady in Q3 2026 at 267,091 shares worth $4.36M. The position accounts for 0.9% of the portfolio, ranked #33.

Sector Gamma AS first reported a position in TNDM in Q1 2025 and has held it in 7 quarters since. The position peaked at $5.87M in Q4 2025. 203 funds tracked by Wall St. Rank hold TNDM as of Q3 2026.

  • Sector Gamma AS held 267,091 shares of Tandem Diabetes Care worth $4.36M as of Q3 2026.
  • Sector Gamma AS left its Tandem Diabetes Care share count unchanged in Q3 2026.
  • Tandem Diabetes Care made up 0.9% of Sector Gamma AS's portfolio in Q3 2026, its #33 holding.
  • Sector Gamma AS first reported a position in Tandem Diabetes Care in Q1 2025 and has held it in 7 quarters since.
  • Sector Gamma AS's Tandem Diabetes Care position peaked at $5.87M in Q4 2025.
  • 203 funds tracked by Wall St. Rank held Tandem Diabetes Care as of Q3 2026.

Based on Sector Gamma AS's 13F filing for Q3 2026, filed 12 Nov 2026.