DATA STORAGE CORP (DTST)
Institutional ownership reported to the SEC as of Q2 2026, across 23 quarters.
Institutions report 170,993 shares against 2,337,738 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end.
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 |
|---|---|---|---|---|---|
| CITADEL ADVISORS LLC | $163.0K | 47,248 | 0.00% | 5q | +105.8%+$83.8K |
| ANGELES WEALTH MANAGEMENT, LLC | $148.7K | 43,100 | 0.01% | 3q | HELD |
| GEODE CAPITAL MANAGEMENT, LLC | $65.4K | 18,942 | 0.00% | 20q | -50.5%-$66.6K |
| Focus Partners Wealth | $61.5K | 17,829 | 0.00% | 3q | HELD |
| MILLENNIUM MANAGEMENT LLC | $43.8K | 12,689 | 0.00% | 2q | -42.3%-$32.0K |
| HRT FINANCIAL LP | $37.0K | 10,901 | 0.00% | new | NEW |
| VANGUARD CAPITAL MANAGEMENT LLC | $28.2K | 8,165 | 0.00% | 2q | -73.9%-$79.8K |
| UBS Group AG | $18.2K | 5,279 | 0.00% | new | NEW |
| VANGUARD FIDUCIARY TRUST CO | $16.7K | 4,834 | 0.00% | 2q | HELD |
| ROYAL BANK OF CANADA | $5.0K | 1,379 | 0.00% | new | NEW |
| OSAIC HOLDINGS, INC. | $1.0K | 300 | 0.00% | 10q | -72.2%-$2.7K |
| BESSEMER GROUP INC | $1.0K | 150 | 0.00% | new | NEW |
| SBI Securities Co., Ltd. | $345 | 100 | 0.00% | 7q | HELD |
| BlackRock, Inc. | $238 | 69 | 0.00% | 8q | HELD |
| BARCLAYS PLC | $17 | 5 | 0.00% | new | NEW |
| Tower Research Capital LLC (TRC) | $10 | 3 | 0.00% | 17q | -99.8%-$4.8K |
| FMR LLC | $1 | 0 | 0.00% | 10q | HELD |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Ten percent owners and entities
Usually an institution that crossed a reporting threshold, or a company taking a strategic stake, rather than an individual with a view.
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-05-22 | Piluso Charles M. | Chairman and CEO | Sold | 41,793 | $159.6K |
| 2026-05-26 | Piluso Charles M. | Chairman and CEO | Sold | 32,610 | $124.6K |
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 | 17 | $590.1K | 170,993 | 5 | 1 | 5 | 0.0% |
| Q1 2026 | 15 | $822.1K | 212,511 | 2 | 1 | 7 | 0.0% |
| Q4 2025 | 35 | $7.3M | 1,425,263 | 14 | 9 | 7 | 0.0% |
| Q3 2025 | 23 | $3.7M | 846,929 | 5 | 5 | 7 | 0.0% |
| Q2 2025 | 21 | $3.2M | 923,189 | 3 | 8 | 4 | 0.0% |
| Q1 2025 | 20 | $3.0M | 820,243 | 1 | 4 | 6 | 0.0% |
| Q4 2024 | 24 | $3.4M | 794,480 | 8 | 5 | 6 | 0.0% |
| Q3 2024 | 20 | $3.2M | 847,503 | 5 | 4 | 6 | 0.0% |
| Q2 2024 | 19 | $5.5M | 837,251 | 8 | 4 | 4 | 0.0% |
| Q1 2024 | 14 | $4.2M | 731,930 | 6 | 5 | 3 | 0.0% |
| Q4 2023 | 14 | $1.8M | 625,707 | 3 | 5 | 0 | 0.0% |
| Q3 2023 | 11 | $1.8M | 558,365 | 0 | 2 | 4 | 0.0% |
| Q2 2023 | 11 | $1.4M | 588,175 | 3 | 1 | 3 | 0.0% |
| Q1 2023 | 9 | $1.0M | 554,131 | 0 | 1 | 2 | 0.0% |
| Q4 2022 | 13 | $885.1K | 599,608 | 4 | 1 | 4 | 0.0% |
| Q3 2022 | 9 | $1.2M | 612,999 | 3 | 2 | 1 | 0.0% |
| Q2 2022 | 7 | $1.3M | 523,195 | 3 | 1 | 1 | 0.0% |
| Q1 2022 | 11 | $1.9M | 584,912 | 4 | 3 | 0 | 0.0% |
| Q4 2021 | 9 | $1.8M | 599,644 | 2 | 3 | 1 | 0.0% |
| Q3 2021 | 8 | $2.4M | 534,677 | 4 | 1 | 1 | 0.0% |
| Q2 2021 | 5 | $4.5M | 776,008 | 4 | 0 | 0 | 0.0% |
| Q1 2021 | 1 | $1.0K | 500 | 0 | 0 | 0 | 0.0% |
| Q4 2020 | 1 | $1.0K | 500 | 0 | 0 | 0 | 0.0% |