Marshall Wace’s Portillo's PTLO Stock Holding History

Marshall Wace’s Portfolio PTLO Stock Details PTLO Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$8.97M	Buy	+1,696,560	New	+$9.23M	0.01%	1029
2025 Q2	–	Sell	-239,890	Closed	-$2.85M	–	3071
2025 Q1	$2.85M	Sell	239,890 -1,511,966	-86%	-$19.7M	﹤0.01%	1312
2024 Q4	$16.5M	Buy	1,751,856 +132,112	+8%	+$1.51M	0.02%	602
2024 Q3	$21.8M	Buy	1,619,744 +210,651	+15%	+$2.35M	0.03%	483
2024 Q2	$13.7M	Sell	1,409,093 -112,637	-7%	-$1.25M	0.02%	612
2024 Q1	$21.6M	Buy	1,521,730 +425,044	+39%	+$5.9M	0.03%	489
2023 Q4	$17.5M	Buy	1,096,686 +640,366	+140%	+$9.89M	0.03%	512
2023 Q3	$7.02M	Buy	456,320 +380,350	+501%	+$7.43M	0.01%	762
2023 Q2	$1.71M	Sell	75,970 -252,835	-77%	-$5.27M	﹤0.01%	1474
2023 Q1	$7.03M	Sell	328,805 -114,284	-26%	-$2.4M	0.01%	845
2022 Q4	$7.23M	Buy	443,089 +399,793	+923%	+$8.01M	0.02%	985
2022 Q3	$854K	Buy	+43,296	New	+$953K	﹤0.01%	2476
2022 Q1	–	Sell	-2,588	Closed	-$97K	–	3887
2021 Q4	$97K	Buy	+2,588	New	+$104K	﹤0.01%	3384

Other funds holding PTLO

OAG

Orbis Allan Gray Hamilton, Bermuda $23.7B AUM 65.43% 1-Year Est. Return

BlackRock New York $5.72T AUM 30.48% 1-Year Est. Return

AllianceBernstein Nashville, Tennessee $309B AUM 23.92% 1-Year Est. Return

Engaged Capital Newport Beach, California $303M AUM 2.09% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

ZIG

Zuckerman Investment Group Chicago, Illinois $1.07B AUM 29.43% 1-Year Est. Return

Geode Capital Management Boston, Massachusetts $1.61T AUM 30.72% 1-Year Est. Return

State Street Boston, Massachusetts $2.9T AUM 29.55% 1-Year Est. Return

Select Equity Group New York $19.5B AUM 17.33% 1-Year Est. Return

William Blair & Company Chicago, Illinois $34.9B AUM 18.88% 1-Year Est. Return

Marshall Wace's PTLO Position: Q1 2026 in Review

Marshall Wace opened a new position in Portillo's (PTLO) in Q1 2026: 1,696,560 shares worth $8.97M. The stake represents 0.01% of the portfolio and ranks #1029 among its holdings. This is a return to the name: Marshall Wace previously reported a position in PTLO as recently as Q1 2025.

Marshall Wace first reported a position in PTLO in Q4 2021 and has held it in 13 quarters since. The position peaked at $21.8M in Q3 2024. 186 funds tracked by Wall St. Rank hold PTLO as of Q1 2026.

Marshall Wace held 1,696,560 shares of Portillo's worth $8.97M as of Q1 2026.
Portillo's was a new Marshall Wace position in Q1 2026.
Portillo's made up 0.01% of Marshall Wace's portfolio in Q1 2026, its #1029 holding.
Marshall Wace first reported a position in Portillo's in Q4 2021 and has held it in 13 quarters since.
Marshall Wace's Portillo's position peaked at $21.8M in Q3 2024.
186 funds tracked by Wall St. Rank held Portillo's as of Q1 2026.

Based on Marshall Wace's 13F filing for Q1 2026, filed 15 May 2026.