DATA STORAGE CORP DTST
COM NEW · Common Stock · CUSIP 23786R201
- SectorTechnology
- IndustryServices-Computer Processing & Data Preparation
- HeadquartersNew York, NY
- FilingsSEC EDGAR
* 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: 2.3m as of 2026-08-13, 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 ≈ $3.45.
Trends to Q2 2026
Institutional holders
Managers reporting a position, each quarter
Numbers
| Quarter | Holders |
|---|---|
| Q3 2022 | 11 |
| Q4 2022 | 15 |
| Q1 2023 | 10 |
| Q2 2023 | 12 |
| Q3 2023 | 12 |
| Q4 2023 | 15 |
| Q1 2024 | 15 |
| Q2 2024 | 20 |
| Q3 2024 | 21 |
| Q4 2024 | 25 |
| Q1 2025 | 21 |
| Q2 2025 | 22 |
| Q3 2025 | 23 |
| Q4 2025 | 35 |
| Q1 2026 | 16 |
| Q2 2026 | 17 |
Buyers vs sellers
Managers adding to or starting a position, vs cutting or selling out
Numbers
| Quarter | Bought or added | Cut or sold out |
|---|---|---|
| Q3 2024 | 9 | 11 |
| Q4 2024 | 13 | 11 |
| Q1 2025 | 5 | 10 |
| Q2 2025 | 11 | 6 |
| Q3 2025 | 10 | 11 |
| Q4 2025 | 23 | 9 |
| Q1 2026 | 3 | 29 |
| Q2 2026 | 6 | 8 |
Biggest buyers
| HRT FINANCIAL LP | New | +10.9k |
| UBS Group AG | New | +5.3k |
| ROYAL BANK OF CANADA | Added | +1.4k |
| CITADEL ADVISORS LLC | Added | +666 |
| BESSEMER GROUP INC | New | +150 |
| BARCLAYS PLC | New | +5 |
Biggest sellers
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | -23.1k |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | -19.3k |
| Centiva Capital, LP | Sold out | -16.2k |
| XTX Topco Ltd | Sold out | -13.1k |
| MILLENNIUM MANAGEMENT LLC | Reduced | -9.3k |
| Tower Research Capital LLC (TRC) | Reduced | -1.4k |
| OSAIC HOLDINGS, INC. | Reduced | -780 |
| MORGAN STANLEY | Sold out | -268 |
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.
| Holder | Stake |
|---|---|
| ARMISTICE CAPITAL, LLC 13G · institution +2.7 pts · filed 2026-02-17 | 10.0% |
Fell to 5% or below in the last year: BARD ASSOCIATES INC (0.0%, 2026-02-04)
Insider purchases and sales since 1 Apr 2026
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)
Numbers
| Quarter | Buying | Bought | Selling | Sold | Sold under a plan |
|---|---|---|---|---|---|
| Q4 2024 | 0 | — | 0 | — | — |
| Q1 2025 | 0 | — | 4 | $69.9k | $44.8k |
| Q2 2025 | 0 | — | 2 | $7.6k | $7.6k |
| Q3 2025 | 0 | — | 0 | — | — |
| Q4 2025 | 0 | — | 5 | $349.3k | — |
| Q1 2026 | 0 | — | 0 | — | — |
| Q2 2026 | 0 | — | 1 | $333.3k | — |
| Q3 2026 | 0 | — | 4 | $40.2k | — |
| Date | Insider | Trade | Value |
|---|---|---|---|
| 2026-09-11 | Kempster Thomas Director | Sold | $10.3k3.5k shares |
| 2026-09-11 | Mitchell Uwayne A. Director | Sold | $8.8k3.0k shares |
| 2026-09-10 | Stein Clifford Director | Sold | $12.2k4.0k shares |
| 2026-09-10 | Argen John Director | Sold | $8.9k3.0k shares |
| 2026-05-26 | Piluso Charles M. Chairman and CEO, director | Sold | $124.6k32.6k shares |
| 2026-05-22 | Piluso Charles M. Chairman and CEO, director | Sold | $159.6k41.8k shares |
| 2026-05-21 | Piluso Charles M. Chairman and CEO, director | Sold | $49.1k12.6k shares |
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, Q2 2026
| Manager | Shares | Change |
|---|---|---|
| ANGELES WEALTH MANAGEMENT, LLC 0.01% of their portfolio | 43.1k $148.7k | Unchanged |
| CITADEL ADVISORS LLC 0.00% of their portfolio | 23.6k $81.5k | Added +666 |
| GEODE CAPITAL MANAGEMENT, LLC 0.00% of their portfolio | 18.9k $65.4k | Reduced -19.3k |
| Focus Partners Wealth 0.00% of their portfolio | 17.8k $61.5k | Unchanged |
| MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio | 12.7k $43.8k | Reduced -9.3k |
| HRT FINANCIAL LP 0.00% of their portfolio | 10.9k $37.0k | New |
| VANGUARD CAPITAL MANAGEMENT LLC 0.00% of their portfolio | 8.2k $28.2k | Reduced -23.1k |
| UBS Group AG 0.00% of their portfolio | 5.3k $18.2k | New |
| VANGUARD FIDUCIARY TRUST CO 0.00% of their portfolio | 4.8k $16.7k | Unchanged |
| ROYAL BANK OF CANADA 0.00% of their portfolio | 1.4k $5.0k | Added +1.4k |
| OSAIC HOLDINGS, INC. 0.00% of their portfolio | 300 $1.0k | Reduced -780 |
| BESSEMER GROUP INC 0.00% of their portfolio | 150 $1.0k | New |
| SBI Securities Co., Ltd. 0.00% of their portfolio | 100 $345 | Unchanged |
| BlackRock, Inc. 0.00% of their portfolio | 69 $238 | Unchanged |
| BARCLAYS PLC 0.00% of their portfolio | 5 $17 | New |
| Tower Research Capital LLC (TRC) 0.00% of their portfolio | 3 $10 | Reduced -1.4k |
| FMR LLC 0.00% of their portfolio | 0 $1 | Unchanged |