Marshall Wace’s KLX Energy Services KLXE Stock Holding History

Marshall Wace’s Portfolio KLXE Stock Details KLXE Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$970K	Buy	+372,897	New	+$941K	﹤0.01%	2147
2025 Q2	–	Sell	-128,153	Closed	-$449K	–	2936
2025 Q1	$449K	Buy	+128,153	New	+$613K	﹤0.01%	2121
2024 Q2	–	Sell	-59,935	Closed	-$464K	–	2749
2024 Q1	$464K	Sell	59,935 -49,583	-45%	-$443K	﹤0.01%	1956
2023 Q4	$1.23M	Sell	109,518 -5,615	-5%	-$56.8K	﹤0.01%	1408
2023 Q3	$1.36M	Buy	115,133 +84,337	+274%	+$938K	﹤0.01%	1387
2023 Q2	$300K	Sell	30,796 -32,106	-51%	-$316K	﹤0.01%	2144
2023 Q1	$733K	Buy	62,902 +27,263	+76%	+$371K	﹤0.01%	1946
2022 Q4	$617K	Buy	+35,639	New	+$502K	﹤0.01%	2292
2022 Q3	–	Sell	-59,939	Closed	-$260K	–	3573
2022 Q2	$260K	Buy	+59,939	New	+$319K	﹤0.01%	3080
2020 Q1	–	Sell	-239	Closed	-$8K	–	1864
2019 Q4	$8K	Sell	239 -12,865	-98%	-$478K	﹤0.01%	1606
2019 Q3	$566K	Buy	+13,104	New	+$874K	﹤0.01%	1080

Other funds holding KLXE

GJL

Gendell Jeffrey L $7.34B AUM 183.72% 1-Year Est. Return

CastleKnight Management New York $6B AUM 121.87% 1-Year Est. Return

VCM

Vanguard Capital Management Malvern, Pennsylvania $4.04T AUM

Morgan Stanley New York $1.66T AUM 25.57% 1-Year Est. Return

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

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

MIM

Macroview Investment Management Bethesda, Maryland $144M AUM 19.29% 1-Year Est. Return

Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

RRA

Round Rock Advisors Wilton, Connecticut $654M AUM 22.95% 1-Year Est. Return

Citadel Advisors Miami, Florida $618B AUM 30.34% 1-Year Est. Return

Marshall Wace's KLXE Position: Q1 2026 in Review

Marshall Wace opened a new position in KLX Energy Services (KLXE) in Q1 2026: 372,897 shares worth $970K. The stake represents ﹤0.01% of the portfolio and ranks #2147 among its holdings. This is a return to the name: Marshall Wace previously reported a position in KLXE as recently as Q1 2025.

Marshall Wace first reported a position in KLXE in Q3 2019 and has held it in 11 quarters since. The position peaked at $1.36M in Q3 2023. 57 funds tracked by Wall St. Rank hold KLXE as of Q1 2026.

Marshall Wace held 372,897 shares of KLX Energy Services worth $970K as of Q1 2026.
KLX Energy Services was a new Marshall Wace position in Q1 2026.
KLX Energy Services made up ﹤0.01% of Marshall Wace's portfolio in Q1 2026, its #2147 holding.
Marshall Wace first reported a position in KLX Energy Services in Q3 2019 and has held it in 11 quarters since.
Marshall Wace's KLX Energy Services position peaked at $1.36M in Q3 2023.
57 funds tracked by Wall St. Rank held KLX Energy Services as of Q1 2026.

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