Ranked by reported Q1 2026 13F market value
Share of total reported institutional value in PRTS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | VANGUARD CAPITAL MANAGEMENT LLC | 2.4M | $1.9M | β | 29.881% | 0.00% |
| 2 | BlackRock, Inc. | 2.0M | $1.6M | 0.0% | 24.528% | 0.00% |
| 3 | North Star Investment Management Corp. | 1.4M | $1.1M | +6.3% | 17.819% | 0.07% |
| 4 | RENAISSANCE TECHNOLOGIES LLC | 1.3M | $1.1M | -1.2% | 16.584% | 0.00% |
| 5 | GEODE CAPITAL MANAGEMENT, LLC | 599K | $471K | -7.8% | 7.435% | 0.00% |
| 6 | VANGUARD FIDUCIARY TRUST CO | 390K | $306K | β | 4.835% | 0.00% |
| 7 | UBS Group AG | 314K | $247K | +58.2% | 3.892% | 0.00% |
| 8 | STATE STREET CORP | 265K | $208K | +11.3% | 3.286% | 0.00% |
| 9 | Kerrisdale Advisers, LLC | 252K | $198K | 0.0% | 3.134% | 0.08% |
| 10 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | 184K | $144K | +64.6% | 2.277% | 0.00% |
| 11 | Argentarii, LLC | 150K | $118K | 0.0% | 1.861% | 0.04% |
| 12 | GOLDMAN SACHS GROUP INC | 148K | $116K | +34.6% | 1.839% | 0.00% |
| 13 | NORTHERN TRUST CORP | 142K | $112K | 0.0% | 1.764% | 0.00% |
| 14 | FMR LLC | 134K | $106K | -78.5% | 1.666% | 0.00% |
| 15 | BARCLAYS PLC | 129K | $102K | 0.0% | 1.604% | 0.00% |
| 16 | XTX Topco Ltd | 106K | $84K | β | 1.322% | 0.00% |
| 17 | HSBC HOLDINGS PLC | 104K | $82K | β | 1.291% | 0.00% |
| 18 | MORGAN STANLEY | 75K | $59K | 0.0% | 0.925% | 0.00% |
| 19 | BANK OF AMERICA CORP /DE/ | 70K | $55K | +249.6% | 0.870% | 0.00% |
| 20 | Fragasso Group Inc. | 64K | $52K | 0.0% | 0.795% | 0.00% |
| 21 | Blue Zone Wealth Advisors, LLC | 60K | $47K | 0.0% | 0.739% | 0.01% |
| 22 | SIMPLEX TRADING, LLC | 57K | $45K | +39.8% | 0.710% | 0.00% |
| 23 | Prime Capital Investment Advisors, LLC | 50K | $39K | 0.0% | 0.620% | 0.00% |
| 24 | PRUDENTIAL FINANCIAL INC | 44K | $35K | β | 0.551% | 0.00% |
| 25 | CCG WEALTH MANAGEMENT, LLC | 38K | $30K | β | 0.477% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in PRTS β a direct measure of their conviction.
Filings activity in PRTS during Q1 2026, grouped by how each filer changed its position.
Institutions that opened a new PRTS position in Q1 2026
Institutions that fully closed their PRTS position in Q1 2026
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q1 2026 | 43 | 4.4% | 15.01% | +3.44 pp | $8M | +30% |
| Q4 2025 | 45 | 18% | 11.57% | 10.95 pp | $6M | 49% |
| Q3 2025 | 55 | 8.3% | 22.52% | 4.65 pp | $13M | 17% |
| Q2 2025 | 60 | +0.0% | 27.17% | 7.90 pp | $15M | 23% |
| Q1 2025 | 60 | 12% | 35.07% | 7.72 pp | $20M | 18% |
| Q4 2024 | 68 | +7.9% | 42.79% | +9.87 pp | $24M | +30% |
| Q3 2024 | 63 | 29% | 32.92% | 36.27 pp | $18M | 52% |
| Q2 2024 | 89 | β | 69.19% | β | $39M | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying PRTS stock.
Based on Q1 2026 13F filings, institutional ownership of CarParts.com, Inc. stands at 15.0%, held across 43 reporting institutions.
VANGUARD CAPITAL MANAGEMENT LLC is the largest reported institutional holder of PRTS, with approximately 2,407,747 shares worth $0.00B as of Q1 2026.
Yes β 2 widely-followed marquee investors appear among the top 25 institutional holders of PRTS, including RENAISSANCE TECHNOLOGIES LLC, SUSQUEHANNA INTERNATIONAL GROUP, LLP.
Our composite Smart Money Score for PRTS is 60 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
12 institutions opened new positions in PRTS during Q1 2026, while 14 fully exited. 27 added to existing positions and 3 trimmed.
PRTS institutional ownership rose by 3.44 percentage points quarter-over-quarter, with a net change of -2 holders.
The top 10 institutions account for 85.7% of all reported 13F value in PRTS, and the top 25 account for 98.5%.
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.
CarParts.com, Inc. (PRTS) Institutional Ownership