Ranked by reported Q3 2025 13F market value
Share of total reported institutional value in TZUP held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | VANGUARD GROUP INC | 283K | $1.4M | +401.3% | 1.713% | 0.00% |
| 2 | Steward Partners Investment Advisory, LLC | 150K | $750K | — | 0.907% | 0.00% |
| 3 | MARSHALL WACE, LLP | 125K | $624K | +322.3% | 0.755% | 0.00% |
| 4 | GEODE CAPITAL MANAGEMENT, LLC | 97K | $487K | +123.4% | 0.589% | 0.00% |
| 5 | OXFORD ASSET MANAGEMENT LLP | 61K | $303K | — | 0.367% | 0.11% |
| 6 | KESTRA PRIVATE WEALTH SERVICES, LLC | 43K | $217K | +18.6% | 0.262% | 0.00% |
| 7 | UBS Group AG | 37K | $185K | +139.2% | 0.223% | 0.00% |
| 8 | STATE STREET CORP | 33K | $167K | — | 0.201% | 0.00% |
| 9 | NORTHERN TRUST CORP | 20K | $101K | — | 0.122% | 0.00% |
| 10 | BlackRock, Inc. | 18K | $88K | +163.3% | 0.107% | 0.00% |
| 11 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 10K | $51K | — | 0.062% | 0.00% |
| 12 | ROYAL BANK OF CANADA | 5K | $25K | -50.6% | 0.030% | 0.00% |
| 13 | Ameritas Advisory Services, LLC | 4K | $20K | — | 0.025% | 0.00% |
| 14 | ARMSTRONG ADVISORY GROUP, INC | 1K | $5K | — | 0.006% | 0.00% |
| 15 | Tower Research Capital LLC (TRC) | 693 | $3K | -11.8% | 0.004% | 0.00% |
| 16 | Fortitude Family Office, LLC | 81 | $405 | 0.0% | 0.001% | 0.00% |
| 17 | CITIGROUP INC | 6 | $30 | — | 0.000% | 0.00% |
| 18 | HARBOUR INVESTMENTS, INC. | 3 | $15 | 0.0% | 0.000% | 0.00% |
| 19 | BANK OF AMERICA CORP /DE/ | 3 | $15 | -89.3% | 0.000% | 0.00% |
| 20 | SIMPLEX TRADING, LLC | 232 | $1 | — | 0.001% | 0.00% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in TZUP — a direct measure of their conviction.
Filings activity in TZUP during Q3 2025, grouped by how each filer changed its position.
Institutions that opened a new TZUP position in Q3 2025
Institutions that fully closed their TZUP position in Q3 2025
4 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q3 2025 | 20 | +54% | 5.83% | +3.97 pp | $4M | +214% |
| Q2 2025 | 13 | +117% | 1.86% | +1.33 pp | $1M | +254% |
| Q1 2025 | 6 | 14% | 0.53% | +0.33 pp | $0M | +157% |
| Q4 2024 | 7 | — | 0.20% | — | $0M | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying TZUP stock.
Based on Q3 2025 13F filings, institutional ownership of Thumzup Media Corporation stands at 5.8%, held across 20 reporting institutions.
VANGUARD GROUP INC is the largest reported institutional holder of TZUP, with approximately 283,270 shares worth $0.00B as of Q3 2025.
Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of TZUP, including SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for TZUP is 69 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
9 institutions opened new positions in TZUP during Q3 2025, while 2 fully exited. 5 added to existing positions and 6 trimmed.
TZUP institutional ownership rose by 3.97 percentage points quarter-over-quarter, with a net change of +7 holders.
The top 10 institutions account for 97.6% of all reported 13F value in TZUP, and the top 25 account for 100.0%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Thumzup Media Corporation (TZUP) Institutional Ownership