UBS O'Connor’s Masco MAS Stock Holding History

UBS O'Connor’s Portfolio MAS Stock Details MAS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2025 Q4	$763K	Buy	12,020 +6,970	+138%	+$452K	0.02%	169
2025 Q3	$355K	Buy	+5,050	New	+$355K	0.01%	214
2016 Q4	–	Sell	-139,942	Closed	-$4.8M	–	437
2016 Q3	$4.8M	Buy	+139,942	New	+$4.84M	0.07%	218
2016 Q1	–	Sell	-209,276	Closed	-$5.92M	–	504
2015 Q4	$5.92M	Buy	+209,276	New	+$5.96M	0.05%	232
2015 Q2	–	Sell	-23,969	Closed	-$562K	–	877
2015 Q1	$562K	Buy	23,969 +4,988	+26%	+$113K	0.01%	648
2014 Q4	$420K	Buy	+18,981	New	+$392K	0.01%	457
2014 Q3	–	Sell	-191,634	Closed	-$3.74M	–	503
2014 Q2	$3.74M	Buy	+191,634	New	+$3.61M	0.02%	233
2013 Q4	–	Sell	-235,794	Closed	-$4.41M	–	457
2013 Q3	$4.41M	Buy	+235,794	New	+$4.2M	0.09%	225

Other funds holding MAS

Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return

BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return

Harris Associates Chicago, Illinois $75.4B AUM 14.46% 1-Year Est. Return

State Street Boston, Massachusetts $3.37T AUM 44.26% 1-Year Est. Return

JP Morgan Chase New York $1.81T AUM 41.13% 1-Year Est. Return

Boston Partners Boston, Massachusetts $113B AUM 38.87% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.88T AUM 44.46% 1-Year Est. Return

Wellington Management Group Boston, Massachusetts $580B AUM 38.23% 1-Year Est. Return

Massachusetts Financial Services Boston, Massachusetts $315B AUM 27.84% 1-Year Est. Return

Nordea Investment Management Stockholm, Sweden $123B AUM 38.85% 1-Year Est. Return

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

UBS O'Connor increased its Masco (MAS) stake by 138% in Q4 2025, buying an estimated $452K and bringing the position to 12,020 shares worth $763K. The position accounts for 0.02% of the portfolio, ranked #169.

UBS O'Connor first reported a position in MAS in Q3 2013 and has held it in 8 quarters since. The position peaked at $5.92M in Q4 2015. 842 funds tracked by Wall St. Rank hold MAS as of Q4 2025.

UBS O'Connor held 12,020 shares of Masco worth $763K as of Q4 2025.
UBS O'Connor bought 6,970 Masco shares in Q4 2025, an estimated $452K.
Masco made up 0.02% of UBS O'Connor's portfolio in Q4 2025, its #169 holding.
UBS O'Connor first reported a position in Masco in Q3 2013 and has held it in 8 quarters since.
UBS O'Connor's Masco position peaked at $5.92M in Q4 2015.
842 funds tracked by Wall St. Rank held Masco as of Q4 2025.

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