Janus Henderson Group’s ATS Corp ATS Stock Holding History

Janus Henderson Group’s Portfolio ATS Stock Details ATS Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q1	$64.5M	Buy	2,297,214 +1,435,375	+167%	+$43.2M	0.03%	356
2025 Q4	$23.8M	Sell	861,839 -36,504	-4%	-$975K	0.01%	578
2025 Q3	$23.5M	Sell	898,343 -23,821	-3%	-$686K	0.01%	577
2025 Q2	$29.4M	Hold	922,164	–	–	0.01%	496
2025 Q1	$24M	Sell	922,164 -540	-0.1%	-$15.1K	0.01%	530
2024 Q4	$28.1M	Sell	922,704 -1,150,150	-55%	-$34.9M	0.01%	516
2024 Q3	$60.2M	Buy	2,072,854 +2,854	+0.1%	+$82.5K	0.03%	348
2024 Q2	$66.9M	Buy	2,070,000 +893,597	+76%	+$28.8M	0.04%	322
2024 Q1	$39.6M	Sell	1,176,403 -372,163	-24%	-$14.8M	0.02%	436
2023 Q4	$67.1M	Buy	1,548,566 +4,754	+0.3%	+$184K	0.04%	318
2023 Q3	$66.1M	Sell	1,543,812 -10,421	-0.7%	-$460K	0.04%	306
2023 Q2	$71.6M	Buy	+1,554,233	New	+$69.8M	0.04%	317

Other funds holding ATS

MCM

Mason Capital Management New York $607M AUM 1.77% 1-Year Est. Return

Royal Bank of Canada Toronto, Ontario, Canada $672B AUM 33.48% 1-Year Est. Return

EIG

EdgePoint Investment Group Toronto, Ontario, Canada $13.2B AUM 32.43% 1-Year Est. Return

BGC

Beutel, Goodman & Co Toronto, Ontario, Canada $13.6B AUM 17.82% 1-Year Est. Return

TCAM

Turtle Creek Asset Management Toronto, Ontario, Canada $2.56B AUM 1.05% 1-Year Est. Return

Bank of Montreal Toronto, Ontario, Canada $304B AUM 35.64% 1-Year Est. Return

FFH

Fairfax Financial Holdings Toronto, Ontario, Canada $2.64B AUM 24.46% 1-Year Est. Return

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return

Connor, Clark & Lunn Investment Management (CC&L) Vancouver, British Columbia, Canada $52.8B AUM 58.98% 1-Year Est. Return

Janus Henderson Group's ATS Position: Q1 2026 in Review

Janus Henderson Group increased its ATS Corp (ATS) stake by 167% in Q1 2026, buying an estimated $43.2M and bringing the position to 2,297,214 shares worth $64.5M. The position accounts for 0.03% of the portfolio, ranked #356.

Janus Henderson Group first reported a position in ATS in Q2 2023 and has held it in 12 quarters since. The position peaked at $71.6M in Q2 2023. 131 funds tracked by Wall St. Rank hold ATS as of Q1 2026.

Janus Henderson Group held 2,297,214 shares of ATS Corp worth $64.5M as of Q1 2026.
Janus Henderson Group bought 1,435,375 ATS Corp shares in Q1 2026, an estimated $43.2M.
ATS Corp made up 0.03% of Janus Henderson Group's portfolio in Q1 2026, its #356 holding.
Janus Henderson Group first reported a position in ATS Corp in Q2 2023 and has held it in 12 quarters since.
Janus Henderson Group's ATS Corp position peaked at $71.6M in Q2 2023.
131 funds tracked by Wall St. Rank held ATS Corp as of Q1 2026.

Based on Janus Henderson Group's 13F filing for Q1 2026, filed 15 May 2026.