RTB Digital, Inc. (RTB) Ownership
RTB ownership summary
as of October 18, 2026- Institutions
- 5.2% of shares outstanding
- Insiders
- 58.77% of shares outstanding
- Shares outstanding
- 14.5M
- Float
- 3.8M shares available to trade
- Short interest
- — 306K shares short
- Days to cover
- 1.75 short interest up 45.8% vs prior month
- Institutions 5.18%
- Insiders 58.77%
- Other investors 36.05%
RTB top institutional holders
19 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Armistice Capital, LLC | 2.42% | 350K | $2.7M | +350,000 (0.0%) | June 30, 2026 |
| 2 | Geode Capital Management, LLC | 1.08% | 157K | $1.2M | +139,809 (+819.2%) | June 30, 2026 |
| 3 | State Street Corp | 0.31% | 45K | $348,587 | +44,979 (0.0%) | June 30, 2026 |
| 4 | Millennium Management LLC | 0.29% | 42K | $325,027 | +41,939 (0.0%) | June 30, 2026 |
| 5 | BlackRock Inc | 0.22% | 32K | $244,799 | +31,215 (+8,391.1%) | June 30, 2026 |
| 6 | Northern Trust Corp | 0.20% | 29K | $228,524 | +29,487 (0.0%) | June 30, 2026 |
| 7 | Vanguard Capital Management, LLC | 0.14% | 20K | $155,721 | +12,742 (+173.3%) | June 30, 2026 |
| 8 | Goss Wealth Management LLC | 0.14% | 20K | $155,302 | — | June 30, 2026 |
| 9 | Jane Street Group LLC | 0.10% | 15K | $117,219 | +15,125 (0.0%) | June 30, 2026 |
| 10 | Vanguard Fiduciary Trust Co | 0.07% | 11K | $83,987 | +5,820 (+116.0%) | June 30, 2026 |
| 11 | UBS Group AG | 0.02% | 2,801 | $21,708 | +2,726 (+3,634.7%) | June 30, 2026 |
| 12 | Royal Bank of Canada | 0.01% | 1,271 | $9,850 | +284 (+28.8%) | June 30, 2026 |
| 13 | Advisor Group Holdings, Inc. | <0.01% | 492 | $3,813 | −9 (−1.8%) | June 30, 2026 |
| 14 | Vanguard Global Advisers, LLC | <0.01% | 20 | $155 | — | June 30, 2026 |
| 15 | Morgan Stanley - Brokerage Accounts | <0.01% | 11 | $85 | — | June 30, 2026 |
| 16 | WOLFF WIESE MAGANA LLC | <0.01% | 8 | $62 | −12 (−60.0%) | June 30, 2026 |
| 17 | Integrated Wealth Concepts LLC | 0.00% | 7 | $54 | +7 (0.0%) | June 30, 2026 |
| 18 | BNP Paribas Arbitrage, SA | 0.00% | 3 | $23 | −1 (−25.0%) | June 30, 2026 |
| 19 | Tower Research Capital LLC | 0.00% | — | — | −990 (−100.0%) | June 30, 2026 |
Value at the latest close. Change = shares bought or sold in the latest quarterly filing (13F). In the top 19, 12 holders added 674K shares and 4 cut 1,012.
RTB top mutual fund and ETF holders
6 largest| # | Holder | % of shares | Shares | Value | Change | Reported |
|---|---|---|---|---|---|---|
| 1 | Fidelity Extended Market Index | 0.45% | 65K | $503,789 | −349 (−0.5%) | August 31, 2026 |
| 2 | Fidelity Total Market Index | 0.20% | 28K | $218,581 | — | August 31, 2026 |
| 3 | Fidelity Series Total Market Index | 0.14% | 20K | $158,472 | −1,677 (−7.6%) | August 31, 2026 |
| 4 | Fidelity Nasdaq Composite Index | 0.04% | 6,238 | $48,344 | −1,873 (−23.1%) | August 31, 2026 |
| 5 | Vanguard U.S. Eq Idx £ Acc | 0.04% | 5,319 | $41,222 | — | August 31, 2026 |
| 6 | JHVIT Total Stock Market Index I | <0.01% | 222 | $1,720 | +222 (0.0%) | August 31, 2026 |
Funds report holdings monthly or quarterly; dates differ by fund.
Who owns RTB
Institutional investors own 5.2% of RTB Digital's shares and insiders 58.77%. The largest holder is Armistice Capital, LLC with 2.42% of the shares (350K), as of June 30, 2026. Among the top 19 institutions, 12 added shares and 4 reduced their stake in the latest filings. The share count rose 372.0% since 2024.
Related: RTB analyst forecast, RTB key metrics. See the RTB stock overview for the latest quote and news.
RTB ownership FAQ
Who owns the most RTB Digital stock?
The largest shareholders of RTB Digital are Armistice Capital, LLC (2.42%), Geode Capital Management, LLC (1.08%), State Street Corp (0.31%), Millennium Management LLC (0.29%), BlackRock Inc (0.22%).
What percentage of RTB Digital is owned by institutions?
Institutions hold 5.2% of RTB Digital's shares outstanding; insiders hold 58.77%.
Which funds own RTB Digital?
The largest fund holders of RTB Digital are Fidelity Extended Market Index (0.45%), Fidelity Total Market Index (0.20%), Fidelity Series Total Market Index (0.14%), Fidelity Nasdaq Composite Index (0.04%), Vanguard U.S. Eq Idx £ Acc (0.04%).
How many shares of RTB Digital are outstanding?
RTB Digital has 14.5M shares outstanding, of which 3.8M are in the public float.