Anterix Inc.: which funds bought and sold
Institutions that bought and sold Anterix shares in Q2 2026, from the holdings they reported to the SEC on Form 13F for March 31, 2026 and June 30, 2026.
Between March 31, 2026 and June 30, 2026, 101 institutions that filed 13F reports for both quarters added to or opened positions in Anterix, and 64 cut or closed them. Together they added a net 1.5M shares, +9.0% on what they held at the start of the quarter. Active managers and hedge funds on our list were net buyers of 2.9M shares (+41.0%); index fund managers were net buyers of 168K shares (+5.8%). 57 opened a new position and 16 sold out entirely.
Bought, Q2 2026 101 institutions, 57 of them new holders Sold, Q2 2026 64 institutions, 16 of them sold out
Net change, all compared +1.5M shares (+9.0%)
Net change, active managers +2.9M shares (+41.0%), 23 bought, 11 sold
Buyers versus sellers
101 bought 21 64 sold
Active managers and hedge funds 23 bought · 11 sold · +2.9M
Index fund managers 6 bought · 3 sold · +168K
Other institutions 72 bought · 50 sold · −1.6M
Biggest buyers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| T. Rowe Price Investment Management, Inc. Active manager | +2.3M New position | 2.3M | $242M |
| Price T Rowe Associates Inc Active manager | +742K +9333.7% | 750K | $77.3M |
| FMR LLC Active manager | +235K +173.8% | 370K | $38.1M |
| Invesco Ltd. | +201K New position | 201K | $20.7M |
| State Street Corp Index funds | +108K +27.8% | 496K | $51.1M |
| D. E. Shaw & Co., Inc. Hedge fund | +87K +1532.5% | 93K | $9.6M |
| Granahan Investment Management, LLC | +72K New position | 72K | $7.4M |
| Blackrock, Inc. Index funds | +68K +6.7% | 1.1M | $111M |
| TD Asset Management Inc | +53K New position | 53K | $5.5M |
| Informed Momentum Co LLC | +53K New position | 53K | $5.4M |
| Gilder Gagnon Howe & Co LLC Active manager | +33K New position | 33K | $3.4M |
| Wellington Management Group LLP Active manager | +31K New position | 31K | $3.2M |
| Evr Research LP | +25K New position | 25K | $2.6M |
| Harbor Capital Advisors, Inc. | +21K New position | 21K | $2.1M |
| Plustick Management LLC | +20K +4.1% | 520K | $53.5M |
| 683 Capital Management, LLC Hedge fund | +20K +43.5% | 66K | $6.8M |
| Panoramic Capital, LLC | +19K +14.4% | 154K | $15.9M |
| Hanseatic Management Services Inc | +18K New position | 18K | $1.9M |
| Caption Management, LLC | +18K New position | 18K | $1.8M |
| Marble Bar Asset Management LLP | +15K +27.5% | 68K | $7M |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| T. Rowe Price Investment Management, Inc. Active manager | +2.3M New position | 2.3M | $242M |
| Price T Rowe Associates Inc Active manager | +742K +9333.7% | 750K | $77.3M |
| FMR LLC Active manager | +235K +173.8% | 370K | $38.1M |
| D. E. Shaw & Co., Inc. Hedge fund | +87K +1532.5% | 93K | $9.6M |
| Gilder Gagnon Howe & Co LLC Active manager | +33K New position | 33K | $3.4M |
| Wellington Management Group LLP Active manager | +31K New position | 31K | $3.2M |
| 683 Capital Management, LLC Hedge fund | +20K +43.5% | 66K | $6.8M |
| Caxton Associates LLP Hedge fund | +13K New position | 13K | $1.4M |
| Trexquant Investment LP Hedge fund | +13K +33.0% | 53K | $5.5M |
| Gabelli Funds LLC Active manager | +13K +4.8% | 279K | $28.7M |
Biggest sellers
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Jane Street Group, LLC | −403K −95.8% | 18K | $1.8M |
| Millennium Management LLC Hedge fund | −278K −90.1% | 30K | $3.1M |
| Ayal Capital Advisors Ltd | −197K Sold out | 0 | — |
| Garnet Equity Capital Holdings, Inc. | −187K −54.5% | 156K | $16.1M |
| Potrero Capital Research LLC | −183K −79.7% | 47K | $4.8M |
| Dg Capital Management, LLC | −168K Sold out | 0 | — |
| Citadel Advisors LLC Hedge fund | −152K −94.4% | 9,014 | $927,901 |
| HRT Financial LP | −144K −82.5% | 31K | $3.2M |
| Centerbook Partners LP Hedge fund | −121K −94.6% | 6,877 | $707,918 |
| Qvt Financial LP | −120K −23.8% | 384K | $39.5M |
| Ardsley Advisory Partners LP | −110K Sold out | 0 | — |
| Gratia Capital, LLC | −88K Sold out | 0 | — |
| Atom Investors LP | −80K −95.1% | 4,124 | $424,525 |
| Citigroup Inc | −60K −49.9% | 60K | $6.2M |
| Squarepoint Ops LLC Hedge fund | −60K Sold out | 0 | — |
| Dimensional Fund Advisors LP | −54K −12.7% | 371K | $38.2M |
| Resolute Capital Asset Partners LLC | −51K Sold out | 0 | — |
| Waterfront Wealth Inc. | −49K −82.1% | 11K | $1.1M |
| Simplex Trading, LLC | −38K −87.7% | 5,377 | $553,508 |
| Susquehanna International Group, LLP | −34K −86.0% | 5,584 | $574,817 |
| Institution | Change in shares | Shares June 30, 2026 | Value |
|---|---|---|---|
| Millennium Management LLC Hedge fund | −278K −90.1% | 30K | $3.1M |
| Citadel Advisors LLC Hedge fund | −152K −94.4% | 9,014 | $927,901 |
| Centerbook Partners LP Hedge fund | −121K −94.6% | 6,877 | $707,918 |
| Squarepoint Ops LLC Hedge fund | −60K Sold out | 0 | — |
| Schonfeld Strategic Advisors LLC Hedge fund | −23K Sold out | 0 | — |
| GAMCO Investors, Inc. Et Al Active manager | −10K −2.4% | 416K | $42.8M |
| J. Goldman & Co LP Hedge fund | −9,033 Sold out | 0 | — |
| Exoduspoint Capital Management, LP Hedge fund | −8,794 Sold out | 0 | — |
| Quantbot Technologies LP Hedge fund | −8,464 −98.2% | 155 | $15,956 |
| Quadrature Capital Ltd Hedge fund | −1,523 −10.5% | 13K | $1.3M |
New positions
| Institution | Shares | Value June 30, 2026 |
|---|---|---|
| T. Rowe Price Investment Management, Inc.Active manager | 2.3M | $242M |
| Invesco Ltd. | 201K | $20.7M |
| Granahan Investment Management, LLC | 72K | $7.4M |
| TD Asset Management Inc | 53K | $5.5M |
| Informed Momentum Co LLC | 53K | $5.4M |
| Gilder Gagnon Howe & Co LLCActive manager | 33K | $3.4M |
| Wellington Management Group LLPActive manager | 31K | $3.2M |
| Evr Research LP | 25K | $2.6M |
| Harbor Capital Advisors, Inc. | 21K | $2.1M |
| Hanseatic Management Services Inc | 18K | $1.9M |
Sold out
| Institution | Shares | Value March 31, 2026 |
|---|---|---|
| Ayal Capital Advisors Ltd | 197K | $7.5M |
| Dg Capital Management, LLC | 168K | $6.4M |
| Ardsley Advisory Partners LP | 110K | $4.2M |
| Gratia Capital, LLC | 88K | $3.3M |
| Squarepoint Ops LLCHedge fund | 60K | $2.3M |
| Resolute Capital Asset Partners LLC | 51K | $2M |
| Schonfeld Strategic Advisors LLCHedge fund | 23K | $886,428 |
| Apis Capital Advisors, LLC | 20K | $753,871 |
| Virtu Financial LLC | 18K | $683,000 |
| J. Goldman & Co LPHedge fund | 9,033 | $344,970 |
Who holds the shares
- Institutions reporting
- 172
- Ten largest holders
- 73.0% of 13F-reported shares
- Index fund managers
- 16.1% of 13F-reported shares
- Active managers and hedge funds
- 52.3% of 13F-reported shares
| Type | Bought | Sold | New | Sold out | Net change in shares | Net % |
|---|---|---|---|---|---|---|
| Active managers and hedge funds | 23 | 11 | 13 | 5 | +2.9M | +41.0% |
| Index fund managers | 6 | 3 | 0 | 0 | +168K | +5.8% |
| Other institutions | 72 | 50 | 44 | 11 | −1.6M | −22.4% |