PRTS
CarParts.com, Inc.Company with tickers: PRTS
CIK
1378950
CUSIP
14427M107
Shares Outstanding
8,098,751
Website
https://www.carparts.com
Investor Relations
https://www.carparts.com/investor
13F Activity (30d)
9 filings
9 filers
Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.
Holders: 33
Total Value: $5,115,271
Total Shares: 6,475,045
Institutional Ownership Trend
25 quarters
Holder Concentration
Across 33 13F filers · Δ vs Dec 31, 2025Top Holder
37.2%
+5.0 pts
Top 5
78.7%
+14.7 pts
Top 10
91.6%
+9.4 pts
HHI
2,056
Moderately concentrated+597
Quarterly Activity
vs Dec 31, 2025
New
9
Increased
4
Decreased
4
Sold Out
12
Unchanged
16
Holder count:
-3
Institutional value:
+143.6%
Shares held:
+54.2%
Top Buyers
vs Dec 31, 2025| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Mid North Star Investment Management Corp. | +85,000 | 1,435,853 | |
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | +72,021 | 183,503 | |
| Mega STATE STREET CORP | +26,839 | 264,777 | |
| Mid SIMPLEX TRADING, LLC | +16,307 | 57,235 |
Top Sellers
vs Dec 31, 2025| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Micro Williams & Novak, LLC | −155,675 | 32,825 | |
| Mega GEODE CAPITAL MANAGEMENT, LLC | −50,915 | 599,069 | |
| Mid Farther Finance Advisors, LLC | −1,500 | 25 | |
| Mega BNP PARIBAS ARBITRAGE, SA | −15 | 723 |
Top New Positions
vs Dec 31, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | 2,407,747 | $1,902,120 | |
| Mega VANGUARD FIDUCIARY TRUST CO | 389,582 | $307,769 | |
| Mid XTX Topco Ltd | 106,493 | $84,129 | |
| Small CCG WEALTH MANAGEMENT, LLC | 38,473 | $30,393 | |
| Mega Vanguard Global Advisers, LLC | 18,212 | $14,387 |
Top Sold-Out Positions
vs Dec 31, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega UBS Group AG | 198,289 | $99,144 | |
| Micro Lotus Technology Management, LP | 159,584 | $79,792 | |
| Mid BRIDGEWAY CAPITAL MANAGEMENT, LLC | 122,256 | $61,128 | |
| Large Empowered Funds, LLC | 64,456 | $32,228 | |
| Mid Cullen/Frost Bankers, Inc. | 50,000 | $25,000 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mega VANGUARD CAPITAL MANAGEMENT LLC | $1,902,120 | 37.19% | 2,407,747 | Shares | Defined | 2026-05-15 | ||||
| Mid North Star Investment Management Corp. | $1,134,323 | 22.18% | 1,435,853 | Shares | Sole | 2026-04-23 | ||||
| Mega GEODE CAPITAL MANAGEMENT, LLC | $473,264 | 9.25% | 599,069 | Shares | Defined | 2026-05-15 | ||||
| Mega VANGUARD FIDUCIARY TRUST CO Bank | $307,769 | 6.02% | 389,582 | Shares | Defined | 2026-05-08 | ||||
| Mega STATE STREET CORP | $209,173 | 4.09% | 264,777 | Shares | Defined | 2026-05-15 | ||||
| Small Kerrisdale Advisers, LLC | $199,471 | 3.90% | 252,495 | Shares | Sole | 2026-05-15 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $144,967 | 2.83% | 183,503 | Shares | Other | 2026-05-15 | ||||
| Small Argentarii, LLC | $118,500 | 2.32% | 150,000 | Shares | Sole | 2026-05-12 | ||||
| Mega NORTHERN TRUST CORP Bank | $112,270 | 2.19% | 142,115 | Shares | Defined | 2026-05-14 | ||||
| Mid XTX Topco Ltd | $84,129 | 1.64% | 106,493 | Shares | Defined | 2026-05-15 | ||||
| Mega HSBC HOLDINGS PLC | $82,204 | 1.61% | 104,056 | Shares | Defined | 2026-04-30 | ||||
| Small Fragasso Financial Advisors Inc | $50,590 | 0.99% | 64,039 | Shares | Sole | 2026-04-07 | ||||
| Small Blue Zone Wealth Advisors, LLC | $47,023 | 0.92% | 59,523 | Shares | Sole | 2026-04-16 | ||||
| Mid SIMPLEX TRADING, LLC | $45,215 | 0.88% | 57,235 | Shares | Sole | 2026-05-14 | ||||
| Mid Prime Capital Investment Advisors, LLC | $39,500 | 0.77% | 50,000 | Shares | Sole | 2026-05-08 | ||||
| Small CCG WEALTH MANAGEMENT, LLC | $30,393 | 0.59% | 38,473 | Shares | Sole | 2026-04-08 | ||||
| Large FORT WASHINGTON INVESTMENT ADVISORS INC /OH/ | $28,456 | 0.56% | 36,021 | Shares | Sole | 2026-04-22 | ||||
| Mega RAYMOND JAMES FINANCIAL INC | $27,357 | 0.53% | 34,631 | Shares | Defined | 2026-05-14 | ||||
| Micro Williams & Novak, LLC | $25,931 | 0.51% | 32,825 | Shares | Sole | 2026-04-21 | ||||
| Mega Vanguard Global Advisers, LLC | $14,387 | 0.28% | 18,212 | Shares | Defined | 2026-05-08 | ||||
| Large HRT FINANCIAL LP | $9,664 | 0.19% | 12,233 | Shares | Defined | 2026-05-14 | ||||
| Small Tamar Securities, LLC Broker-Dealer | $9,006 | 0.18% | 11,400 | Shares | Sole | 2026-05-14 | ||||
| Micro Dickmeyer Boyce Financial Management, Inc. | $8,690 | 0.17% | 11,000 | Shares | Sole | 2026-05-13 | ||||
| Mid Dynamic Advisor Solutions LLC | $8,285 | 0.16% | 10,488 | Shares | Sole | 2026-04-08 | ||||
| Large Federation des caisses Desjardins du Quebec | $1,659 | 0.03% | 2,100 | Shares | Defined | 2026-05-14 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $571 | 0.01% | 723 | Shares | Defined | 2026-05-12 | ||||
| Mid Sound Income Strategies, LLC | $197 | 0.00% | 250 | Shares | Sole | 2026-04-27 | ||||
| Large JONES FINANCIAL COMPANIES LLLP | $50 | 0.00% | 64 | Shares | Sole | 2026-05-15 | ||||
| Mid WHITTIER TRUST CO Bank | $45 | 0.00% | 57 | Shares | Sole | 2026-04-28 | ||||
| Small SHP Wealth Management | $37 | 0.00% | 47 | Shares | Sole | 2026-05-08 | ||||
| Mid Farther Finance Advisors, LLC | $19 | 0.00% | 25 | Shares | Sole | 2026-04-07 | ||||
| Mid SBI Securities Co., Ltd. Broker-Dealer | $3 | 0.00% | 4 | Shares | Defined | 2026-04-28 | ||||
| Large OSAIC HOLDINGS, INC. | $3 | 0.00% | 5 | Shares | Defined | 2026-05-15 | ||||
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