Mariner
ASRT

Mariner’s Assertio ASRT Stock Holding History

Mariner’s Portfolio ASRT Stock Details ASRT Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-5,367
Closed -$70.9K – 3548
2025
Q3 		$70.9K Buy
+5,367
New +$62.5K ﹤0.01% 3409
2021
Q3 		– Sell
-46,760
Closed -$1.09M – 991
2021
Q2 		$1.09M Buy
46,760
+13,445
+40% +$388K 0.01% 641
2021
Q1 		$1.36M Sell
33,315
-10,852
-25% -$539K 0.01% 541
2020
Q4 		$948K Buy
44,167
+37,500
+562% +$1.17M 0.01% 568
2020
Q3 		$266K Buy
+6,667
New +$324K ﹤0.01% 687

Other funds holding ASRT

NCM
Nantahala Capital Management New Canaan, Connecticut $2.72B AUM 121.58% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
OM
Opaleye Management Boston, Massachusetts $759M AUM 124.8% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Edgewood Management
Edgewood Management Greenwich, Connecticut $15.5B AUM 9.67% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return
CM
CM Management Gulf Breeze, Florida $120M AUM 37.12% 1-Year Est. Return
Citadel Advisors
Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return
Millennium Management
Millennium Management New York $240B AUM 35.51% 1-Year Est. Return

Mariner's ASRT Position: Q4 2025 in Review

Mariner sold out of Assertio (ASRT) in Q4 2025, closing a stake of 5,367 shares — an estimated $70.9K sold.

Mariner first reported a position in ASRT in Q3 2020 and held it in 5 quarters. The position peaked at $1.36M in Q1 2021. 52 funds tracked by Wall St. Rank hold ASRT as of Q4 2025.

  • Mariner reported no remaining Assertio position as of Q4 2025 after selling out during the quarter.
  • Mariner sold 5,367 Assertio shares in Q4 2025, an estimated $70.9K.
  • Mariner first reported a position in Assertio in Q3 2020 and held it in 5 quarters.
  • Mariner's Assertio position peaked at $1.36M in Q1 2021.
  • 52 funds tracked by Wall St. Rank held Assertio as of Q4 2025.

Based on Mariner's 13F filing for Q4 2025, filed 13 Feb 2026.