What does CUSIP 03676C100 represent in this 13F holders report?

CUSIP 03676C100 is the security identifier for ATEX - Anterix Inc. - Common Stock used to aggregate holder disclosures.

How many institutions held ATEX - Anterix Inc. - Common Stock in Q1 2021?

96 institutional investors reported ATEX - Anterix Inc. - Common Stock for Q1 2021. Use the holders table for investor-level position and value details.

Anterix Inc. - Common Stock (ATEX)

CUSIP: 03676C100

Q1 2021 13F Holders as of 31 Mar 2021

Type / Class: Equity / Common Stock
Shares outstanding: 18,768,052
Total 13F shares: 15,500,931
Share change: +909,358
Total reported value: $731,032,284
Put/Call ratio: 46%
Price per share: $47.16
Number of holders: 96
Value change: +$49,980,240
Number of buys: 55
Number of sells: 35

Quarterly Holders Quick Answers

What is CUSIP 03676C100?
CUSIP 03676C100 identifies ATEX - Anterix Inc. - Common Stock in SEC institutional holdings data.

Need full ownership history?
Open the full security ownership history page.

Next holder-history checks

These links keep the next click tied to holder verification, nearby quarters, or outside-13F ownership context.

Back to full security ownership history for the broader multi-quarter picture.
Latest 13F filings for newly reported positions across managers.
Latest Schedule 13D/13G reports for ownership changes outside the 13F cadence.
SEC investors directory for manager drilldown.

Explore More Reporting Periods

Jump to adjacent filing periods for faster comparison and easier crawl discovery.

Newer quarter: Q2 2021
Previous quarter: Q4 2020

Recent filing periods for CUSIP 03676C100:

Q1 2026 Q4 2025 Q3 2025 Q2 2025 Q1 2025 Q4 2024 Q3 2024 Q2 2024

Top shareholders of ATEX - Anterix Inc. - Common Stock (13F + 13D/G + 3/4/5)

Grouped by holder across the latest SEC ownership disclosures. Ownership % is shown only when it is directly reported or safely comparable across share classes.

Methodology: rows are grouped by holder and ranked by the holder's primary source value. — indicates unavailable or non-comparable values; "mixed-class rows" means the latest filing spans non-comparable classes.

Holder	Source	Role / Reporting	Ownership %	Shares	Holdings Value	12M Net Δ	As of	Details
Owl Creek Asset Management, L.P.	13F	Company	28%	5,251,015	$197,438,000	—	31 Dec 2020	13F
Lomas Capital Management, LLC	13F	Company	8.5%	1,594,396	$59,949,000	—	31 Dec 2020	13F
Allianz Asset Management GmbH	13F	Company	7.2%	1,358,156	$51,067,000	—	31 Dec 2020	13F
MORGAN STANLEY	13F	Company	7%	1,306,973	$49,142,000	—	31 Dec 2020	13F
BlackRock Finance, Inc.	13F	Company	4.4%	817,695	$30,746,000	—	31 Dec 2020	13F
Bain Capital Credit, LP	13F	Company	4.3%	807,610	$30,366,000	—	31 Dec 2020	13F
VANGUARD GROUP INC	13F	Company	3.3%	625,330	$23,513,000	—	31 Dec 2020	13F
Michael F. Price	13F	Individual	2.8%	521,200	$19,597,000	—	31 Dec 2020	13F
Sixth Street Partners Management Company, L.P.	13F	Company	2%	380,000	$14,288,000	—	31 Dec 2020	13F
ISZO CAPITAL MANAGEMENT LP	13F	Company	1.8%	340,699	$12,810,000	—	31 Dec 2020	13F
QVT Financial LP	13F	Company	1.7%	327,197	$12,303,000	—	31 Dec 2020	13F
Hudson Bay Capital Management LP	13F	Company	1.5%	285,352	$10,729,000	—	31 Dec 2020	13F
DIMENSIONAL FUND ADVISORS LP	13F	Company	1.5%	281,580	$10,587,000	—	31 Dec 2020	13F
Heard Capital LLC	13F	Company	1.4%	267,686	$10,064,000	—	31 Dec 2020	13F
STATE STREET CORP	13F	Company	1.3%	235,544	$8,856,000	—	31 Dec 2020	13F
GEODE CAPITAL MANAGEMENT, LLC	13F	Company	0.92%	172,292	$6,478,000	—	31 Dec 2020	13F
Cerberus Capital Management, L.P.	13F	Company	0.89%	167,665	$6,304,000	—	31 Dec 2020	13F
NORTHERN TRUST CORP	13F	Company	0.8%	150,392	$5,654,000	—	31 Dec 2020	13F
Roubaix Capital, LLC	13F	Company	0.7%	132,086	$4,966,000	—	31 Dec 2020	13F
D. E. Shaw & Co., Inc.	13F	Company	0.52%	97,980	$3,684,000	—	31 Dec 2020	13F
Weiss Multi-Strategy Advisers LLC	13F	Company	0.42%	79,200	$2,978,000	—	31 Dec 2020	13F
SUSQUEHANNA INTERNATIONAL GROUP, LLP	13F	Company	0.42%	78,324	$2,945,000	—	31 Dec 2020	13F
AMERICAN FINANCIAL GROUP INC	13F	Company	0.41%	76,566	$2,879,000	—	31 Dec 2020	13F
CHARLES SCHWAB INVESTMENT MANAGEMENT INC	13F	Company	0.4%	75,334	$2,833,000	—	31 Dec 2020	13F
GABELLI FUNDS LLC	13F	Company	0.39%	74,000	$2,782,000	—	31 Dec 2020	13F
Nuveen Asset Management, LLC	13F	Company	0.36%	67,714	$2,546,000	—	31 Dec 2020	13F
ALLIANCEBERNSTEIN L.P.	13F	Company	0.27%	51,144	$1,923,000	—	31 Dec 2020	13F
Schonfeld Strategic Advisors LLC	13F	Company	0.22%	40,466	$1,522,000	—	31 Dec 2020	13F
GOLDMAN SACHS GROUP INC	13F	Company	0.2%	37,306	$1,403,000	—	31 Dec 2020	13F
Bank of New York Mellon Corp	13F	Company	0.2%	37,297	$1,402,000	—	31 Dec 2020	13F
AVIVA PLC	13F	Company	0.18%	34,649	$1,303,000	—	31 Dec 2020	13F
Teton Advisors, Inc.	13F	Company	0.18%	33,000	$1,241,000	—	31 Dec 2020	13F
WEBSTER BANK, N. A.	13F	Company	0.16%	29,300	$1,102,000	—	31 Dec 2020	13F
Swiss National Bank	13F	Company	0.14%	25,350	$953,000	—	31 Dec 2020	13F
TWO SIGMA ADVISERS, LP	13F	Company	0.13%	24,600	$925,000	—	31 Dec 2020	13F
CITADEL ADVISORS LLC	13F	Company	0.13%	24,598	$925,000	—	31 Dec 2020	13F
GARNET EQUITY CAPITAL HOLDINGS, INC.	13F	Company	0.13%	24,295	$913,000	—	31 Dec 2020	13F
CALIFORNIA PUBLIC EMPLOYEES RETIREMENT SYSTEM	13F	Company	0.12%	22,100	$831,000	—	31 Dec 2020	13F
PARAMETRIC PORTFOLIO ASSOCIATES LLC	13F	Company	0.11%	20,086	$755,000	—	31 Dec 2020	13F
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM	13F	Company	0.09%	16,454	$619,000	—	31 Dec 2020	13F
RHUMBLINE ADVISERS	13F	Company	0.07%	13,798	$519,000	—	31 Dec 2020	13F
CREDIT SUISSE AG/	13F	Company	0.07%	12,663	$476,000	—	31 Dec 2020	13F
WELLS FARGO & COMPANY/MN	13F	Company	0.06%	11,689	$440,000	—	31 Dec 2020	13F
NJ State Employees Deferred Compensation Plan	13F	Company	0.06%	11,000	$414,000	—	31 Dec 2020	13F
DEUTSCHE BANK AG\	13F	Company	0.05%	9,822	$370,000	—	31 Dec 2020	13F
GILDER GAGNON HOWE & CO LLC	13F	Company	0.05%	9,318	$350,000	—	31 Dec 2020	13F
NEW YORK STATE COMMON RETIREMENT FUND	13F	Company	0.05%	8,800	$331,000	—	31 Dec 2020	13F
Engineers Gate Manager LP	13F	Company	0.04%	8,432	$317,000	—	31 Dec 2020	13F
SG Americas Securities, LLC	13F	Company	0.04%	8,004	$301,000	—	31 Dec 2020	13F
AIGEN INVESTMENT MANAGEMENT, LP	13F	Company	0.04%	7,694	$289,000	—	31 Dec 2020	13F

Institutional Holders of Anterix Inc. - Common Stock (ATEX) as of Q1 2021

As of 31 Mar 2021, Anterix Inc. - Common Stock (ATEX) was held by 96 institutional shareholders that filed Form 13F with the SEC. Together, they reported ownership of 15,500,931 shares. The largest 10 holders included Owl Creek Asset Management, L.P., Allianz Asset Management GmbH, MORGAN STANLEY, BlackRock Inc., Bain Capital Credit, LP, VANGUARD GROUP INC, PRICE MICHAEL F, Sixth Street Partners Management Company, L.P., QVT Financial LP, and Clearbridge Investments, LLC. This page lists 96 institutional shareholders reporting positions in this security for the Q1 2021 filing period.

Investor	Option	Weight %	Change %	Value $	* Price	Shares	Share Change	Activity	Report Period

Compare Q1 2021 vs Q4 2020 Across Filers

Q4 2020 holders

Q1 2021 holders

Holder diff

Investor	Q4 2020 Shares	Q1 2021 Shares	Share Diff	Share Chg %	Q4 2020 Value $	Q1 2021 Value $	Value Diff $	Value Chg %

Trend: ostatnie 8 kwartałów (+ wybrane okresy porównania).

Quarterly Holders Trend

Quarterly Value Trend

Quarterly Shares Trend

* Reported Price is the price of the security as of the portfolio date. This value is significant in that it is the last known price at which the security was still held.
An asterisk sign (*) next to the price indicates that the price is likely invalid.