IMC Chicago’s Anterix ATEX Stock Holding History

IMC Chicago’s Portfolio ATEX Stock Details ATEX Fund Activity

Bought

Maintained

Sold

Quarter	Market Value	Status	Shares	Change in Stake	Trade Value	Portfolio Weight	Portfolio Position
2026 Q2	$3.94M	Buy	38,300 +18,300	+92%	+$1.07M	﹤0.01%	2352
2026 Q1	$764K	Buy	+20,000	New	+$633K	﹤0.01%	3555

Other funds holding ATEX

OCAM

Owl Creek Asset Management New York $1.21B AUM 169.99% 1-Year Est. Return

T. Rowe Price Investment Management Baltimore, Maryland $153B AUM 38.14% 1-Year Est. Return

HCL

Heard Capital LLC Chicago, Illinois $2.34B AUM 46.76% 1-Year Est. Return

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

T. Rowe Price Associates Baltimore, Maryland $999B AUM 46.22% 1-Year Est. Return

Jupiter Topco New York $245B AUM

Vanguard Capital Management Malvern, Pennsylvania $4.68T AUM

Plustick Management Charlottesville, Virginia $269M AUM 340.55% 1-Year Est. Return

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

GAMCO Investors Greenwich, Connecticut $11.1B AUM 41.79% 1-Year Est. Return

IMC Chicago's ATEX Position: Q2 2026 in Review

IMC Chicago reduced its Anterix (ATEX) stake by 90% in Q2 2026, selling an estimated $1.61M and leaving 2,929 shares worth $302K. The position accounts for ﹤0.01% of the portfolio, ranked #5222.

IMC Chicago first reported a position in ATEX in Q4 2025 and has held it in 3 quarters since. The position peaked at $1.16M in Q1 2026. 172 funds tracked by Wall St. Rank hold ATEX as of Q2 2026.

IMC Chicago held 2,929 shares of Anterix worth $302K as of Q2 2026.
IMC Chicago sold 27,434 Anterix shares in Q2 2026, an estimated $1.61M.
Anterix made up ﹤0.01% of IMC Chicago's portfolio in Q2 2026, its #5222 holding.
IMC Chicago first reported a position in Anterix in Q4 2025 and has held it in 3 quarters since.
IMC Chicago's Anterix position peaked at $1.16M in Q1 2026.
172 funds tracked by Wall St. Rank held Anterix as of Q2 2026.

Based on IMC Chicago's 13F filing for Q2 2026, filed 6 Aug 2026.