Vault-13

ANTERIX INC ATEX

COM · Common Stock · CUSIP 03676C100

100 institutional holders
15,836,07015.8m shares reported held*
83.5% of all shares outstanding*
$567.4mreported value*

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 19.0m as of 2022-10-27, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $35.83. Options: 5 managers hold calls ($1.0m notional), 2 hold puts ($7.0k).

Biggest calls

CITADEL ADVISORS LLC — $654.0k18.3k shares
GROUP ONE TRADING LLC — $304.0k8.5k shares
SIMPLEX TRADING, LLC — $42.0k1.2k shares
GARNET EQUITY CAPITAL HOLDINGS, INC. — $6.0k476 shares
CONCOURSE FINANCIAL GROUP SECURITIES, INC. — $00 shares

Biggest puts

Options at notional value: the value of the shares the contracts control, as filers report them, not what the options cost. Not included in the holders, shares or buying above.

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
Owl Creek Asset Management, L.P. 13D · may seek influence filed 2026-07-08 28.5% 5.6m≈ $571.5m 2026-07-08
T. Rowe Price Investment Management, Inc. 13G · institution new · filed 2026-07-08 12.0% new 2.3m≈ $241.7m 2026-07-08
Heard Capital LLC 13D · may seek influence filed 2025-03-05
Stated purposeItem 4 is hereby amended to add the following: On February 28, 2025, Mr. Heard elected to begin receiving stock compensation under the Issuer's non-employee director compensation program. Full filing
9.4% 1.7m≈ $179.3m 2025-03-05

Fell to 5% or below in the last year: BlackRock, Inc. (4.7%, 2026-10-27), VANGUARD GROUP INC (5.0%, 2026-01-30)

Insider purchases and sales in Q3 2022

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

Officers and directors buying vs selling

Number of people, by quarter (10% owners not included)

BuyingSelling
404Q4 20: 0 buyingQ4 20: 0 sellingQ1 21: 0 buyingQ1 21: 0 sellingQ1 21Q2 21: 0 buyingQ2 21: 0 sellingQ3 21: 0 buyingQ3 21: 0 sellingQ3 21Q4 21: 2 buyingQ4 21: 2 sellingQ1 22: 0 buyingQ1 22: 3 sellingQ1 22Q2 22: 1 buyingQ2 22: 2 sellingQ3 22: 1 buyingQ3 22: 0 sellingQ3 22
Numbers
QuarterBuyingBoughtSellingSoldSold under a plan
Q4 20200—0——
Q1 20210—0——
Q2 20210—0——
Q3 20210—0——
Q4 20212$263.8k2$1.4m—
Q1 20220—3$1.5m—
Q2 20221$4.3k2$1.2m—
Q3 20221$3.7k0——
DateInsiderTradeSharesPrice ValueTheir holding
2022-09-16 Gray Timothy Chief Financial Officer Bought 100 $36.67 $3.7k100 shares +<1%

Their holding: how much the trade added to or took from the insider's holding (direct, or the trust or fund named). The same trade is sometimes reported by more than one insider, such as a fund and the director who represents it; totals count it once. A value is left blank where the reported price is far from the market price (usually a typo).

Holders, Q3 2022

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Owl Creek Asset Management, L.P. 12.96% of their portfolio New York, NY 5,411,7765.4m $193.3m $193.3m 12.96% —
2 MORGAN STANLEY 0.01% of their portfolio NEW YORK, NY 1,269,8931.3m $45.4m $45.4m 0.01% —
3 BlackRock Inc. 0.00% of their portfolio New York, NY 1,235,8781.2m $44.1m $44.1m 0.00% —
4 Heard Capital LLC 5.15% of their portfolio Chicago, IL 1,203,0771.2m $43.0m $43.0m 5.15% —
5 STONEHILL CAPITAL MANAGEMENT LLC 26.09% of their portfolio NEW YORK, NY 899,675899.7k $32.1m $32.1m 26.09% —
6 VANGUARD GROUP INC 0.00% of their portfolio Valley Forge, PA 790,861790.9k $28.2m $28.2m 0.00% —
7 Bain Capital Credit, LP 8.46% of their portfolio Boston, MA 681,005681.0k $24.3m $24.3m 8.46% —
8 QVT Financial LP 1.48% of their portfolio New York, NY 503,941503.9k $18.0m $18.0m 1.48% —
9 Price Jennifer C. 2.95% of their portfolio NEW YORK, NY 400,000400.0k $14.3m $14.3m 2.95% —
10 GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio BOSTON, MA 347,332347.3k $12.4m $12.4m 0.00% —
11 STATE STREET CORP 0.00% of their portfolio BOSTON, MA 332,042332.0k $11.9m $11.9m 0.00% —
12 Clearbridge Investments, LLC 0.01% of their portfolio NEW YORK, NY 311,063311.1k $11.1m $11.1m 0.01% —
13 DIMENSIONAL FUND ADVISORS LP 0.00% of their portfolio AUSTIN, TX 304,211304.2k $10.9m $10.9m 0.00% —
14 NORTHERN TRUST CORP 0.00% of their portfolio CHICAGO, IL 172,305172.3k $6.2m $6.2m 0.00% —
15 CHARLES SCHWAB INVESTMENT MANAGEMENT INC 0.00% of their portfolio SAN FRANCISCO, CA 135,646135.6k $4.8m $4.8m 0.00% —
16 PenderFund Capital Management Ltd. 1.95% of their portfolio VANCOUVER, A1 126,500126.5k $6.2m $6.2m 1.95% —
17 TUDOR INVESTMENT CORP ET AL 0.11% of their portfolio STAMFORD, CT 122,489122.5k $4.4m $4.4m 0.11% —
18 FMR LLC 0.00% of their portfolio BOSTON, MA 120,318120.3k $4.3m $4.3m 0.00% —
19 GOLDMAN SACHS GROUP INC 0.00% of their portfolio NEW YORK, NY 117,952118.0k $4.2m $4.2m 0.00% —
20 Roubaix Capital, LLC 3.71% of their portfolio DENVER, CO 116,780116.8k $4.2m $4.2m 3.71% —
21 Resolute Capital Asset Partners LLC 3.43% of their portfolio DENVER, CO 107,145107.1k $3.8m $3.8m 3.43% —
22 GABELLI FUNDS LLC 0.03% of their portfolio Rye, NY 97,00097.0k $3.5m $3.5m 0.03% —
23 STATE OF WISCONSIN INVESTMENT BOARD 0.01% of their portfolio MADISON, WI 78,86978.9k $2.8m $2.8m 0.01% —
24 SCOGGIN MANAGEMENT LP 4.50% of their portfolio NEW YORK, NY 75,00075.0k $2.7m $2.7m 4.50% —
25 Bank of New York Mellon Corp 0.00% of their portfolio NEW YORK, NY 66,96067.0k $2.4m $2.4m 0.00% —
26 KIRR MARBACH & CO LLC /IN/ 0.77% of their portfolio COLUMBUS, IN 63,68763.7k $2.3m $2.3m 0.77% —
27 Teton Advisors, Inc. 0.55% of their portfolio Rye, NY 63,00063.0k $2.2m $2.2m 0.55% —
28 CITADEL ADVISORS LLC 0.00% of their portfolio MIAMI, FL 54,54554.5k $1.9m $1.9m 0.00% —
29 Nuveen Asset Management, LLC 0.00% of their portfolio CHICAGO, IL 52,23052.2k $1.9m $1.9m 0.00% —
30 SIRIOS CAPITAL MANAGEMENT L P 0.30% of their portfolio BOSTON, MA 45,27645.3k $1.6m $1.6m 0.30% —
31 GARNET EQUITY CAPITAL HOLDINGS, INC. 3.72% of their portfolio NEW YORK, NY 40,20240.2k $1.4m $1.4m 3.72% —
32 O'Brien Greene & Co. Inc 0.19% of their portfolio MEDIA, PA 39,60039.6k $1.4m $1.4m 0.19% —
33 Swiss National Bank 0.00% of their portfolio ZURICH, V8 31,45031.4k $1.1m $1.1m 0.00% —
34 CenterBook Partners LP 0.17% of their portfolio GREENWICH, CT 24,02424.0k $858.0k $858.0k 0.17% —
35 RHUMBLINE ADVISERS 0.00% of their portfolio BOSTON, MA 22,49522.5k $804.0k $804.0k 0.00% —
36 BANK OF AMERICA CORP /DE/ 0.00% of their portfolio CHARLOTTE, NC 21,95222.0k $785.0k $785.0k 0.00% —
37 RENAISSANCE TECHNOLOGIES LLC 0.00% of their portfolio NEW YORK, NY 20,60020.6k $736.0k $736.0k 0.00% —
38 D. E. Shaw & Co., Inc. 0.00% of their portfolio New York, NY 19,66919.7k $702.0k $702.0k 0.00% —
39 CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM 0.00% of their portfolio WEST SACRAMENTO, CA 18,67018.7k $667.0k $667.0k 0.00% —
40 JANE STREET GROUP, LLC 0.00% of their portfolio NEW YORK, NY 15,44615.4k $552.0k $552.0k 0.00% —
41 Alpha Paradigm Partners, LLC 0.23% of their portfolio CHICAGO, IL 15,05315.1k $538.0k $538.0k 0.23% —
42 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 13,67513.7k $488.0k $488.0k 0.00% —
43 MARTINGALE ASSET MANAGEMENT L P 0.01% of their portfolio BOSTON, MA 13,29813.3k $476.0k $476.0k 0.01% —
44 SG Americas Securities, LLC 0.01% of their portfolio NEW YORK, NY 11,98112.0k $428.0k $428.0k 0.01% —
45 UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC 0.00% of their portfolio NEW YORK, NY 11,94311.9k $426.6k $426.6k 0.00% —
46 WOODMONT INVESTMENT COUNSEL LLC 0.05% of their portfolio NASHVILLE, TN 11,65011.7k $416.0k $416.0k 0.05% —
47 NEW YORK STATE COMMON RETIREMENT FUND 0.00% of their portfolio ALBANY, NY 11,41011.4k $408.0k $408.0k 0.00% —
48 NJ State Employees Deferred Compensation Plan 0.07% of their portfolio TRENTON, NJ 11,00011.0k $393.0k $393.0k 0.07% —
49 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 10,76910.8k $385.0k $385.0k 0.00% —
50 COMMONWEALTH EQUITY SERVICES, LLC 0.00% of their portfolio WALTHAM, MA 10,34210.3k $369.0k $369.0k 0.00% —
51 CREDIT SUISSE AG/ 0.00% of their portfolio ZURICH, V8 9,97310.0k $356.0k $356.0k 0.00% —
52 Aureus Asset Management, LLC 0.03% of their portfolio BOSTON, MA 9,9309.9k $355.0k $355.0k 0.03% —
53 MetLife Investment Management, LLC 0.00% of their portfolio Whippany, NJ 9,8379.8k $351.4k $351.4k 0.00% —
54 GAMCO INVESTORS, INC. ET AL 0.00% of their portfolio GREENWICH, CT 9,5009.5k $339.0k $339.0k 0.00% —
55 MARSHALL WACE, LLP 0.00% of their portfolio LONDON, X0 9,1519.2k $328.0k $328.0k 0.00% —
56 AMERICAN INTERNATIONAL GROUP, INC. 0.00% of their portfolio New York, NY 8,7398.7k $312.0k $312.0k 0.00% —
57 LPL Financial LLC 0.00% of their portfolio FORT MILL, SC 8,6698.7k $310.0k $310.0k 0.00% —
58 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 8,5198.5k $304.3k $304.3k 0.00% —
59 ALLIANCEBERNSTEIN L.P. 0.00% of their portfolio NASHVILLE, TN 8,5008.5k $304.0k $304.0k 0.00% —
60 DEUTSCHE BANK AG\ 0.00% of their portfolio FRANKFURT AM MAIN, 2M 7,8777.9k $281.0k $281.0k 0.00% —
61 Man Group plc 0.00% of their portfolio LONDON, X0 7,3747.4k $263.0k $263.0k 0.00% —
62 VOYA INVESTMENT MANAGEMENT LLC 0.00% of their portfolio ATLANTA, GA 6,9987.0k $250.0k $250.0k 0.00% —
63 TWO SIGMA ADVISERS, LP 0.00% of their portfolio NEW YORK, NY 6,6006.6k $236.0k $236.0k 0.00% —
64 Invesco Ltd. 0.00% of their portfolio ATLANTA, GA 5,6305.6k $201.0k $201.0k 0.00% —
65 Legal & General Group Plc 0.00% of their portfolio London, X0 5,4985.5k $197.0k $197.0k 0.00% —
66 Aquatic Capital Management LLC 0.02% of their portfolio CHICAGO, IL 4,6004.6k $164.0k $164.0k 0.02% —
67 THOMPSON SIEGEL & WALMSLEY LLC 0.00% of their portfolio RICHMOND, VA 3,2343.2k $116.0k $116.0k 0.00% —
68 Caption Management, LLC 0.02% of their portfolio OKLAHOMA CITY, OK 2,9563.0k $106.0k $106.0k 0.02% —
69 SIMPLEX TRADING, LLC 0.00% of their portfolio CHICAGO, IL 2,6842.7k $95.0k $95.0k 0.00% —
70 AMALGAMATED BANK 0.00% of their portfolio NEW YORK, NY 2,5482.5k $91.0k $91.0k 0.00% —
71 GROUP ONE TRADING LLC 0.00% of their portfolio CHICAGO, IL 2,0722.1k $74.0k $74.0k 0.00% —
72 LAZARD ASSET MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 1,6021.6k $57.0k $57.0k 0.00% —
73 Ameritas Investment Partners, Inc. 0.00% of their portfolio LINCOLN, NE 1,4431.4k $51.0k $51.0k 0.00% —
74 Tower Research Capital LLC (TRC) 0.00% of their portfolio NEW YORK, NY 1,3301.3k $48.0k $48.0k 0.00% —
75 Metropolitan Life Insurance Co/NY 0.00% of their portfolio New York, NY 1,1151.1k $39.8k $39.8k 0.00% —
76 EMERALD ADVISERS, LLC 0.00% of their portfolio LEOLA, PA 1,1001.1k $39.0k $39.0k 0.00% —
77 Spire Wealth Management 0.00% of their portfolio MCLEAN, VA 934934 $33.0k $33.0k 0.00% —
78 Zurcher Kantonalbank (Zurich Cantonalbank) 0.00% of their portfolio ZURICH, V8 912912 $33.0k $33.0k 0.00% —
79 CANADA LIFE ASSURANCE Co 0.00% of their portfolio WINNIPEG, A2 834834 $30.0k $30.0k 0.00% —
80 WELLS FARGO & COMPANY/MN 0.00% of their portfolio SAN FRANCISCO, CA 791791 $28.0k $28.0k 0.00% —
81 CITIGROUP INC 0.00% of their portfolio NEW YORK, NY 705705 $25.0k $25.0k 0.00% —
82 UBS Group AG 0.00% of their portfolio ZURICH, V8 466466 $17.0k $17.0k 0.00% —
83 ROYAL BANK OF CANADA 0.00% of their portfolio TORONTO, A6 324324 $12.0k $12.0k 0.00% —
84 CWM, LLC 0.00% of their portfolio OMAHA, NE 322322 $12.0k $12.0k 0.00% —
85 OSAIC HOLDINGS, INC. 0.00% of their portfolio SCOTTSDALE, AZ 238238 $9.0k $9.0k 0.00% —
86 US BANCORP \DE\ 0.00% of their portfolio MINNEAPOLIS, MN 222222 $8.0k $8.0k 0.00% —
87 NISA INVESTMENT ADVISORS, LLC 0.00% of their portfolio ST. LOUIS, MO 216216 $8.0k $8.0k 0.00% —
88 PRIVATE TRUST CO NA 0.00% of their portfolio CLEVELAND, OH 190190 $7.0k $7.0k 0.00% —
89 BAILLIE GIFFORD & CO 0.00% of their portfolio EDINBURGH, X0 162162 $6.0k $6.0k 0.00% —
90 Lindbrook Capital, LLC 0.00% of their portfolio CALABASAS, CA 132132 $5.0k $5.0k 0.00% —
91 TCI Wealth Advisors, Inc. 0.00% of their portfolio Tucson, AZ 122122 $4.0k $4.0k 0.00% —
92 PNC Financial Services Group, Inc. 0.00% of their portfolio Pittsburgh, PA 9494 $3.0k $3.0k 0.00% —
93 SIGNATUREFD, LLC 0.00% of their portfolio ATLANTA, GA 7272 $3.0k $3.0k 0.00% —
94 Glassman Wealth Services 0.00% of their portfolio VIENNA, VA 6363 $2.0k $2.0k 0.00% —
95 Parallel Advisors, LLC 0.00% of their portfolio SAN FRANCISCO, CA 4848 $2.0k $2.0k 0.00% —
96 Global Retirement Partners, LLC 0.00% of their portfolio San Rafael, CA 3939 $1.0k $1.0k 0.00% —
97 QUADRANT CAPITAL GROUP LLC 0.00% of their portfolio CINCINNATI, OH 99 $0 $0 0.00% —
98 IFP Advisors, Inc 0.00% of their portfolio TAMPA, FL 88 $1.0k $1.0k 0.00% —
99 Covestor Ltd 0.00% of their portfolio LONDON, X0 33 $0 $0 0.00% —
100 CONCOURSE FINANCIAL GROUP SECURITIES, INC. 0.00% of their portfolio BIRMINGHAM, AL 00 $0 $0 0.00% —