UOC
EXAS

UBS O'Connor’s Exact Sciences EXAS Stock Holding History

UBS O'Connor’s Portfolio EXAS Stock Details EXAS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		$181M Buy
+1,779,212
New +$143M 4.81% 9
2017
Q3 		– Sell
-59,671
Closed -$2.11M – 372
2017
Q2 		$2.11M Buy
+59,671
New +$1.84M 0.03% 253
2015
Q2 		– Sell
-40,000
Closed -$880K – 835
2015
Q1 		$880K Sell
40,000
-10,000
-20% -$254K 0.01% 548
2014
Q4 		$1.37M Buy
+50,000
New +$1.22M 0.02% 322
2013
Q3 		– Sell
-330,000
Closed -$4.59M – 472
2013
Q2 		$4.59M Buy
+330,000
New +$3.58M 0.09% 250

Other funds holding EXAS

Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
HI
HBK Investments Dallas, Texas $10.2B AUM 67.73% 1-Year Est. Return
PCM
Pentwater Capital Management Naples, Florida $16.4B AUM 55.44% 1-Year Est. Return
FCM
Farallon Capital Management San Francisco, California $21.7B AUM 79.24% 1-Year Est. Return
DKCM
Davidson Kempner Capital Management New York $8.42B AUM 61.81% 1-Year Est. Return
State Street
State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return
Balyasny Asset Management
Balyasny Asset Management Chicago, Illinois $80.2B AUM 51.53% 1-Year Est. Return
Millennium Management
Millennium Management New York $276B AUM 44.8% 1-Year Est. Return
Norges Bank
Norges Bank Oslo, Norway $1T AUM

UBS O'Connor's EXAS Position: Q4 2025 in Review

UBS O'Connor opened a new position in Exact Sciences (EXAS) in Q4 2025: 1,779,212 shares worth $181M. The stake represents 4.81% of the portfolio and ranks #9 among its holdings. This is a return to the name: UBS O'Connor previously reported a position in EXAS as recently as Q2 2017.

UBS O'Connor first reported a position in EXAS in Q2 2013 and has held it in 5 quarters since. 710 funds tracked by Wall St. Rank hold EXAS as of Q4 2025.

  • UBS O'Connor held 1,779,212 shares of Exact Sciences worth $181M as of Q4 2025.
  • Exact Sciences was a new UBS O'Connor position in Q4 2025.
  • Exact Sciences made up 4.81% of UBS O'Connor's portfolio in Q4 2025, its #9 holding.
  • UBS O'Connor first reported a position in Exact Sciences in Q2 2013 and has held it in 5 quarters since.
  • 710 funds tracked by Wall St. Rank held Exact Sciences as of Q4 2025.

Based on UBS O'Connor's 13F filing for Q4 2025, filed 13 Feb 2026.