AA
IMOS

ABC Arbitrage’s ChipMOS TECHNOLOGIES IMOS Stock Holding History

ABC Arbitrage’s Portfolio IMOS Stock Details IMOS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-15,185
Closed -$290K – 364
2025
Q3 		$290K Buy
+15,185
New +$268K 0.03% 180
2025
Q1 		– Sell
-20,862
Closed -$393K – 234
2024
Q4 		$393K Buy
+20,862
New +$433K 0.06% 167

Other funds holding IMOS

Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
BlackRock
BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $481B AUM 30.42% 1-Year Est. Return
VPIM
Vanguard Personalized Indexing Management Oakland, California $10.2B AUM 34.45% 1-Year Est. Return
Creative Planning
Creative Planning Overland Park, Kansas $147B AUM 18.73% 1-Year Est. Return
RG
Renaissance Group Covington, Kentucky $2.39B AUM 27.81% 1-Year Est. Return
Goldman Sachs
Goldman Sachs New York $871B AUM 31.28% 1-Year Est. Return
PAM
Parvin Asset Management Sioux Falls, South Dakota $139M AUM 49.07% 1-Year Est. Return
BP
Ballentine Partners Waltham, Massachusetts $8.18B AUM 27.59% 1-Year Est. Return

ABC Arbitrage's IMOS Position: Q4 2025 in Review

ABC Arbitrage sold out of ChipMOS TECHNOLOGIES (IMOS) in Q4 2025, closing a stake of 15,185 shares — an estimated $290K sold.

ABC Arbitrage first reported a position in IMOS in Q4 2024 and held it in 2 quarters. The position peaked at $393K in Q4 2024. 57 funds tracked by Wall St. Rank hold IMOS as of Q4 2025.

  • ABC Arbitrage reported no remaining ChipMOS TECHNOLOGIES position as of Q4 2025 after selling out during the quarter.
  • ABC Arbitrage sold 15,185 ChipMOS TECHNOLOGIES shares in Q4 2025, an estimated $290K.
  • ABC Arbitrage first reported a position in ChipMOS TECHNOLOGIES in Q4 2024 and held it in 2 quarters.
  • ABC Arbitrage's ChipMOS TECHNOLOGIES position peaked at $393K in Q4 2024.
  • 57 funds tracked by Wall St. Rank held ChipMOS TECHNOLOGIES as of Q4 2025.

Based on ABC Arbitrage's 13F filing for Q4 2025, filed 4 Feb 2026.