Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in NBY held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 423K | $631K | -76.9% | 7.043% | 0.00% |
| 2 | GEODE CAPITAL MANAGEMENT, LLC | 290K | $433K | -76.9% | 4.829% | 0.00% |
| 3 | VANGUARD CAPITAL MANAGEMENT LLC | 272K | $406K | — | 4.528% | 0.00% |
| 4 | VANGUARD FIDUCIARY TRUST CO | 131K | $195K | — | 2.176% | 0.00% |
| 5 | JANE STREET GROUP, LLC | 121K | $180K | +72.8% | 2.015% | 0.00% |
| 6 | STATE STREET CORP | 117K | $175K | -62.6% | 1.949% | 0.00% |
| 7 | RENAISSANCE TECHNOLOGIES LLC | 83K | $123K | — | 1.377% | 0.00% |
| 8 | NORTHERN TRUST CORP | 54K | $80K | -80.4% | 0.893% | 0.00% |
| 9 | Qube Research & Technologies Ltd | 42K | $63K | +2.8% | 0.698% | 0.00% |
| 10 | TWO SIGMA INVESTMENTS, LP | 25K | $37K | — | 0.413% | 0.00% |
| 11 | State of Wyoming | 24K | $36K | — | 0.404% | 0.00% |
| 12 | Schonfeld Strategic Advisors LLC | 15K | $22K | — | 0.243% | 0.00% |
| 13 | Catalyst Funds Management Pty Ltd | 14K | $20K | — | 0.228% | 0.00% |
| 14 | Vanguard Global Advisers, LLC | 11K | $17K | — | 0.190% | 0.00% |
| 15 | Tower Research Capital LLC (TRC) | 2K | $3K | -28.0% | 0.036% | 0.00% |
| 16 | WELLS FARGO & COMPANY/MN | 950 | $1K | — | 0.016% | 0.00% |
| 17 | HRT FINANCIAL LP | 14K | $20 | — | 0.225% | 0.00% |
| 18 | UBS Group AG | 3 | $4 | -100.0% | 0.000% | 0.00% |
| 19 | MORGAN STANLEY | 3 | $4 | -100.0% | 0.000% | 0.00% |
| 20 | FMR LLC | 3 | $4 | — | 0.000% | 0.00% |
| 21 | Addison Advisors LLC | 1 | $2 | 0.0% | 0.000% | 0.00% |
| 22 | NVWM, LLC | 1 | $1 | -66.7% | 0.000% | 0.00% |
| 23 | NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | 1 | $1 | -100.0% | 0.000% | 0.00% |
| 24 | ROYAL BANK OF CANADA | 1 | $0 | -99.5% | 0.000% | 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 NBY — a direct measure of their conviction.
Filings activity in NBY during Q1 2026, grouped by how each filer changed its position.
8 quarters of 13F filings · Δ columns show change vs prior quarter
| Quarter | Inst. Holders | Δ Holders | Ownership % | Δ Ownership | Total 13F Value | Δ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 24 | 7.7% | 27.41% | 172.58 pp | $2M | 97% |
| Q4 2025 | 26 | +86% | 199.99% | +196.87 pp | $83M | +30050% |
| Q3 2025 | 14 | +0.0% | 3.12% | +1.69 pp | $0M | +118% |
| Q2 2025 | 14 | 26% | 1.43% | 0.97 pp | $0M | 40% |
| Q1 2025 | 19 | +12% | 2.40% | +1.45 pp | $0M | +153% |
| Q4 2024 | 17 | +21% | 0.95% | +0.11 pp | $0M | +12% |
| Q3 2024 | 14 | +27% | 0.84% | 1.36 pp | $0M | 62% |
| Q2 2024 | 11 | — | 2.20% | — | $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 NBY stock.
Based on Q1 2026 13F filings, institutional ownership of NovaBay Pharmaceuticals, Inc. stands at 27.4%, held across 24 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of NBY, with approximately 423,343 shares worth $0.00B as of Q1 2026.
Yes — 3 widely-followed marquee investors appear among the top 25 institutional holders of NBY, including JANE STREET GROUP, LLC, RENAISSANCE TECHNOLOGIES LLC, TWO SIGMA INVESTMENTS, LP.
Our composite Smart Money Score for NBY is 46 out of 100 (Neutral). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
11 institutions opened new positions in NBY during Q1 2026, while 13 fully exited. 0 added to existing positions and 12 trimmed.
NBY institutional ownership fell by 172.58 percentage points quarter-over-quarter, with a net change of -2 holders.
The top 10 institutions account for 95.9% of all reported 13F value in NBY, 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.
NovaBay Pharmaceuticals, Inc. (NBY) Institutional Ownership