ART TECHNOLOGY ACQUISITION C (ARTCW)
Institutional ownership reported to the SEC as of Q2 2026, across 2 quarters.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BOOTHBAY FUND MANAGEMENT, LLC | $395.7K | 39,848? | 0.01% | 2q | |
| Linden Advisors LP | $168.0K | 400,000 | 0.00% | 2q | HELD |
| Polar Asset Management Partners Inc. | $150.8K | 381,500 | 0.00% | 2q | +1.7%+$2.6K |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | $149.4K | 403,864 | 0.00% | 2q | +7.7%+$10.7K |
| ARISTEIA CAPITAL, L.L.C. | $149.0K | 358,927 | 0.00% | 2q | HELD |
| TENOR CAPITAL MANAGEMENT Co., L.P. | $148.2K | 375,000 | 0.00% | 2q | HELD |
| K2 PRINCIPAL FUND, L.P. | $135.3K | 338,240 | 0.01% | 2q | +1.8%+$2.4K |
| Magnetar Financial LLC | $110.0K | 250,000 | 0.00% | 2q | HELD |
| Mint Tower Capital Management B.V. | $99.0K | 250,000 | 0.01% | 2q | HELD |
| AQR Arbitrage LLC | $96.7K | 261,402 | 0.00% | 2q | HELD |
| Alberta Investment Management Corp | $74.1K | 187,500 | 0.00% | 2q | HELD |
| SONA ASSET MANAGEMENT (US) LLC | $69.4K | 187,500 | 0.00% | 2q | HELD |
| Shaolin Capital Management LLC | $64.3K | 162,612 | 0.00% | 2q | -7.1%-$4.9K |
| Periscope Capital Inc. | $63.1K | 159,600 | 0.01% | 2q | +8.5%+$4.9K |
| BNP PARIBAS FINANCIAL MARKETS | $59.7K | 151,094 | 0.00% | 2q | HELD |
| MILLENNIUM MANAGEMENT LLC | $59.3K CALL | options only | 0.00% | 2q | OPTIONS |
| Clear Street Group Inc. | $55.7K | 140,972 | 0.00% | 2q | -24.0%-$17.6K |
| Context Capital Management, LLC | $49.4K | 125,000 | 0.00% | 2q | HELD |
| GLAZER CAPITAL, LLC | $44.0K | 112,097 | 0.00% | 2q | HELD |
| TORONTO DOMINION BANK | $39.5K | 99,900 | 0.00% | 2q | +99800.0%+$39.4K |
| MMCAP International Inc. SPC | $34.8K | 88,075 | 0.00% | new | NEW |
| SkyView Investment Advisors, LLC | $30.0K | 75,000 | 0.02% | new | NEW |
| WOLVERINE ASSET MANAGEMENT LLC | $25.7K | 64,985 | 0.00% | new | NEW |
| COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $24.7K | 62,500 | 0.00% | new | NEW |
| PICTON MAHONEY ASSET MANAGEMENT | $19.8K | 49,999 | 0.00% | new | NEW |
| Meteora Capital, LLC | $19.8K | 50,000 | 0.00% | 2q | -75.0%-$59.2K |
| Schonfeld Strategic Advisors LLC | $17.8K | 45,000 | 0.00% | new | NEW |
| Radcliffe Capital Management, L.P. | $12.8K | 30,841 | 0.00% | 2q | HELD |
| WHITEBOX ADVISORS LLC | $12.5K | 31,516 | 0.00% | 2q | HELD |
| RLH Capital LLC | $9.9K | 25,000 | 0.00% | new | NEW |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | $8.5K | 25,000 | 0.00% | 2q | HELD |
| Bulldog Investors, LLP | $4.9K | 12,500 | 0.00% | new | NEW |
| Quarry LP | $4.9K | 12,500 | 0.00% | new | NEW |
| Kepos Capital LP | $2.0K | 6,025 | 0.00% | 2q | HELD |
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-10-23 | 2026-10-20 | Directors or officers departed or appointed | filing |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q2 2026 | 33 | $2.0M | 4,924,149 | 9 | 5 | 3 | 2.9% |
| Q1 2026 | 23 | $1.3M | 4,292,157 | 23 | 0 | 0 | 1.6% |