CC
Chicago Capital Management, LLC: 13F Stock Holdings & Portfolio (Q3 2026)
Chicago Capital Management, LLCCIK: 0001580162
High-turnover traderMomentum followerQuality / disciplined sizing
Total reported value
$110.4M
Reporting period: 2026-09-30 · Number of holdings: 26
Chicago Capital Management, LLC disclosed 26 holdings in its latest 13F filing for the period ending 2026-09-30, with total reported value of $110.4M and a quarterly turnover rate of 119.3%.
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Personality snowflake
- Concentration
- 21.17
- Portfolio Stability
- 100
- Momentum
- 100
- Sector conviction
- 87.96
- Diversification
- 52
- Sizing Uniformity
- 93.75
Chicago Capital Management, LLC's disclosed holdings carry a Herfindahl concentration index of 0.053 — mathematically equivalent to about 19 equally-sized positions, close to its 26 actual disclosed holdings. Value is spread relatively evenly across the portfolio rather than concentrated in a handful of names.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.63), suggesting a disciplined, rules-based approach to how much capital goes into each idea.
No strong tilt toward either adding to existing winners or initiating outsized new positions was observed in the latest reported quarter.
Sector classification currently covers about 28% of this portfolio's disclosed value; the remainder includes holdings (e.g. unmapped tickers, options, or other security types) not yet covered by our sector mapping.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govSold out NUVL
Sold out APGE
New buy ATKR
Sold out GTLS
Sold out BAND 0.5 04-01-28
Sold out TMHC
Holdings Map
New buyAddUnchangedTrim
Top 10 holdings by weight
Full holdings list this quarter
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | ATKR | Atkore Inc | Stock-Other | 8.54% | +8.54% | NEW | |
| 2 | RPD 0.25 03-15-27Bond | Rapid7 Inc | Bond | 7.53% | +1.91% | +30.67% | |
| 3 | LARCN 1.75 01-15-27Bond | Lithium Argentina AG | Bond | 6.36% | +6.36% | NEW | |
| 4 | REAL 1 03-01-28Bond | THE Realreal Inc | Bond | 6.34% | +2.08% | +42.40% | |
| 5 | VERI 1.75 11-15-26Bond | Veritone Inc | Bond | 6.29% | +1.49% | +27.27% | |
| 6 | ENOV 3.875 10-15-28Bond | Enovis CORP | Bond | 5.74% | +5.74% | NEW | |
| 7 | MGPI 1.875 11-15-41Bond | Mgp Ingredients Inc | Bond | 5.37% | +0.09% | +0.03% | |
| 8 | PAR 1.5 10-15-27Bond | Par Technology CORP | Bond | 5.34% | +4.38% | +443.66% | |
| 9 | ITGR | Integer Holdings CORP | Stock-Healthcare | 5.00% | +5.00% | NEW | |
| 10 | HPE 7.625 09-01-27Bond | Hp Enterprise Co | Bond | 4.87% | +1.48% | — | |
| 11 | WGO 3.25 01-15-30Bond | Winnebago Industries | Bond | 4.83% | +4.83% | NEW | |
| 12 | AMPH 2 03-15-29Bond | Amphastar Pharmaceutical | Bond | 4.65% | +0.22% | +1.10% | |
| 13 | EEFT 0.75 03-15-49Bond | Euronet Worldwide Inc | Bond | 4.12% | +4.12% | NEW | |
| 14 | HZO | Marinemax Inc | Stock-Other | 3.84% | +3.84% | NEW | |
| 15 | SRPT 1.25 09-15-27Bond | Sarepta Therapeutics Inc | Bond | 3.72% | +1.05% | +34.54% | |
| 16 | SHAK 0 03-01-28Bond | Shake Shack Inc | Bond | 3.58% | +0.05% | +0.10% | |
| 17 | ETSY 0.25 06-15-28Bond | Etsy Inc | Bond | 3.57% | +0.07% | — | |
| 18 | RPD 1.25 03-15-29Bond | Rapid7 Inc | Bond | 3.23% | +3.23% | NEW | |
| 19 | PAR 1 01-15-30Bond | Par Technology CORP | Bond | 3.01% | +3.01% | NEW | |
| 20 | XRX 3.75 03-15-30Bond | Xerox Holdings CORP | Bond | 1.78% | +0.49% | +25.00% | |
| 21 | FOUR 6 05-01-28Bond | Shift4 Payments Inc | Bond | 1.12% | +1.12% | NEW | |
| 22 | SO 7.125 12-15-28 ABond | Southern Co | Bond | 0.41% | +0.41% | NEW | |
| 23 | NSTS | Nsts Bancorp Inc | Stock-Other | 0.29% | +0.02% | — | |
| 24 | ACVA | Acv Auctions Inc-a | Stock-Other | 0.24% | +0.24% | NEW | |
| 25 | BLFS | Biolife Solutions Inc | Stock-Other | 0.20% | +0.20% | NEW | |
| 26 | XRXDW | Xerox Holdings CORP | Stock-Other | 0.02% | — | — |
💡
Data Source Notice: AlphaSMO is the web's most authoritative 13F / Inside Trader database. Institutional holdings and insider trades presented here are precisely computed to deliver accurate portfolio reporting.
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q3 | 26 | $110.4M | 100 | ||
| 2026 Q2 | 27 | $112.3M | 100 | ||
| 2026 Q1 | 29 | $120.7M | 100 | ||
| 2025 Q4 | 43 | $146.9M | 81 | ||
| 2025 Q3 | 28 | $111.8M | 100 | ||
| 2025 Q2 | 40 | $136.1M | 0 | ||
| 2025 Q1 | 47 | $160.9M | 100 | ||
| 2024 Q4 | 48 | $162.0M | 0 | ||
| 2024 Q3 | 41 | $149.6M | 0 | ||
| 2024 Q2 | 41 | $129.3M | 0 | 1EVBG 0 03-15-262TTGT 0 12-15-263CDLX 1 09-15-25 | |
| 2024 Q1 | 34 | $95.0M | 0 | 1EVBG 0.125 12-15-242KAMN 3.25 05-01-243TTGT 0 12-15-26 | |
| 2023 Q4 | 31 | $63.0M | 0 | ||
| 2023 Q3 | 18 | $37.9M | 0 | ||
| 2023 Q2 | 16 | $78.1M | 0 | ||
| 2023 Q1 | 23 | $91.1M | 0 | ||
| 2022 Q4 | 24 | $110.2M | 0 | ||
| 2022 Q3 | 31 | $183.8M | 0 | ||
| 2022 Q2 | 29 | $176.2M | 0 | ||
| 2022 Q1 | 32 | $175.3M | 0 | ||
| 2021 Q4 | 27 | $144.8M | 0 | ||
| 2021 Q3 | 40 | $215.9M | 0 | ||
| 2021 Q2 | 34 | $178.5M | 100 | ||
| 2021 Q1 | 33 | $214.8M | 100 | ||
| 2020 Q4 | 18 | $125.5M | 100 | ||
| 2020 Q3 | 15 | $104.4M | 100 | ||
| 2020 Q2 | 10 | $39.4M | 100 | ||
| 2020 Q1 | 27 | $124.9M | 100 | ||
| 2019 Q4 | 24 | $119.2M | 100 | ||
| 2019 Q3 | 23 | $191.9M | 100 | ||
| 2019 Q2 | 31 | $232.6M | 100 | ||
| 2019 Q1 | 24 | $219.2M | 100 | ||
| 2018 Q4 | 25 | $251.1M | 100 | 104685W226483E355264U | |
| 2018 Q3 | 26 | $259.0M | 100 | 129265N2345605303349M | |
| 2018 Q2 | 32 | $373.0M | 100 | 174978Q248562P3G98294 | |
| 2018 Q1 | 25 | $255.2M | 100 | 148562P22333263G98294 | |
| 2017 Q4 | 24 | $167.0M | 100 | ||
| 2017 Q3 | 21 | $202.4M | 91 | ||
| 2017 Q2 | 44 | $448.4M | 100 | ||
| 2017 Q1 | 35 | $345.7M | 100 | 112513429181943861811 | |
| 2016 Q4 | 32 | $328.5M | 100 | 1G3039724130863535678 | |
| 2016 Q3 | 23 | $193.2M | 100 | ||
| 2016 Q2 | 36 | $298.7M | 100 | ||
| 2016 Q1 | 23 | $270.0M | 100 | ||
| 2015 Q4 | 34 | $268.3M | 100 | ||
| 2015 Q3 | 30 | $286.9M | 100 | 11785662740189359161R | |
| 2015 Q2 | 35 | $219.1M | 93 | 1178566225490A342726X | |
| 2015 Q1 | 37 | $237.9M | 0 | 117856620628963826552 |
Holding changes this quarter
Chicago Capital Management, LLC's most significant position changes for 2026-09-30: Sold out: Nuvalent Inc-a (NUVL); Sold out: Apogee Therapeutics Inc (APGE); New buy: Atkore Inc (ATKR); Sold out: Chart Industries Inc (GTLS); Sold out: Bandwidth Inc (BAND 0.5 04-01-28).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | ATKR | Atkore Inc | +8.5% | NEW | New buy |
| 2 | LARCN 1.75 01-15-27Bond | Lithium Argentina AG | +6.4% | NEW | New buy |
| 3 | ENOV 3.875 10-15-28Bond | Enovis CORP | +5.7% | NEW | New buy |
| 4 | ITGR | Integer Holdings CORP | +5% | NEW | New buy |
| 5 | WGO 3.25 01-15-30Bond | Winnebago Industries | +4.8% | NEW | New buy |
| 6 | PAR 1.5 10-15-27Bond | Par Technology CORP | +4.4% | +443.66% | Add |
| 7 | EEFT 0.75 03-15-49Bond | Euronet Worldwide Inc | +4.1% | NEW | New buy |
| 8 | HZO | Marinemax Inc | +3.8% | NEW | New buy |
| 9 | RPD 1.25 03-15-29Bond | Rapid7 Inc | +3.2% | NEW | New buy |
| 10 | PAR 1 01-15-30Bond | Par Technology CORP | +3% | NEW | New buy |
| 11 | REAL 1 03-01-28Bond | THE Realreal Inc | +2.1% | +42.40% | Add |
| 12 | RPD 0.25 03-15-27Bond | Rapid7 Inc | +1.9% | +30.67% | Add |
| 13 | VERI 1.75 11-15-26Bond | Veritone Inc | +1.5% | +27.27% | Add |
| 14 | HPE 7.625 09-01-27Bond | Hp Enterprise Co | +1.5% | — | Unchanged |
| 15 | FOUR 6 05-01-28Bond | Shift4 Payments Inc | +1.1% | NEW | New buy |
| 16 | SRPT 1.25 09-15-27Bond | Sarepta Therapeutics Inc | +1.1% | +34.54% | Add |
| 17 | XRX 3.75 03-15-30Bond | Xerox Holdings CORP | +0.5% | +25.00% | Add |
| 18 | SO 7.125 12-15-28 ABond | Southern Co | +0.4% | NEW | New buy |
| 19 | ACVA | Acv Auctions Inc-a | +0.2% | NEW | New buy |
| 20 | AMPH 2 03-15-29Bond | Amphastar Pharmaceutical | +0.2% | +1.10% | Add |
| 21 | BLFS | Biolife Solutions Inc | +0.2% | NEW | New buy |
| 22 | MGPI 1.875 11-15-41Bond | Mgp Ingredients Inc | +0.1% | +0.03% | Add |
| 23 | ETSY 0.25 06-15-28Bond | Etsy Inc | +0.1% | — | Unchanged |
| 24 | SHAK 0 03-01-28Bond | Shake Shack Inc | +0.1% | +0.10% | Add |
| 25 | NSTS | Nsts Bancorp Inc | 0% | — | Unchanged |
| 26 | XRXDW | Xerox Holdings CORP | — | — | Unchanged |
| 27 | EA | Electronic Arts Inc | -0.3% | EXIT | Sold out |
| 28 | STEL | Stellar Bancorp Inc | -0.3% | EXIT | Sold out |
| 29 | TBRG | Trubridge Inc | -0.6% | EXIT | Sold out |
| 30 | TECH | Bio-techne CORP | -1.8% | EXIT | Sold out |
| 31 | ESPR | Esperion Therapeutics Inc | -2.3% | EXIT | Sold out |
| 32 | ALOT | Astronova Inc | -2.5% | EXIT | Sold out |
| 33 | CPRX | Catalyst Pharmaceuticals Inc | -2.6% | EXIT | Sold out |
| 34 | FIVN 1 03-15-29Bond | Five9 Inc | -4% | EXIT | Sold out |
| 35 | SABHLD 7.32 08-01-26Bond | Sabre Glbl Inc | -6.3% | EXIT | Sold out |
| 36 | TMHC | Taylor Morrison Home CORP | -6.4% | EXIT | Sold out |
| 37 | BAND 0.5 04-01-28Bond | Bandwidth Inc | -6.8% | EXIT | Sold out |
| 38 | GTLS | Chart Industries Inc | -7.4% | EXIT | Sold out |
| 39 | APGE | Apogee Therapeutics Inc | -8.7% | EXIT | Sold out |
| 40 | NUVL | Nuvalent Inc-a | -9.8% | EXIT | Sold out |
Filing History
FAQ
What is Chicago Capital Management, LLC and what type of investor is it?
Chicago Capital Management, LLC is an investment manager that files SEC Form 13F quarterly, disclosing its U.S. public equity holdings to regulators. As of the most recent reporting period (2026-09-30), the firm manages a tracked equity portfolio valued at approximately $110.4M, spread across 26 disclosed positions.
What are Chicago Capital Management, LLC's largest equity positions?
Based on the latest 13F filing, Chicago Capital Management, LLC's top holdings by market value are:
1. Atkore Inc (ATKR) — $9.4M (8.5%)
2. Rapid7 Inc (RPD 0.25 03-15-27) — $8.3M (7.5%)
3. Lithium Argentina AG (LARCN 1.75 01-15-27) — $7.0M (6.4%)
4. THE Realreal Inc (REAL 1 03-01-28) — $7.0M (6.3%)
5. Veritone Inc (VERI 1.75 11-15-26) — $6.9M (6.3%)
What changes did Chicago Capital Management, LLC make in its most recent portfolio filing?
In the latest reported quarter, Chicago Capital Management, LLC made 36 notable position adjustments: 13 new positions were initiated, 9 existing holdings were added to, 0 positions were partially reduced, and 14 were completely exited. The largest of these moves: Sold out: Nuvalent Inc-a (NUVL); Sold out: Apogee Therapeutics Inc (APGE); New buy: Atkore Inc (ATKR); Sold out: Chart Industries Inc (GTLS); Sold out: Bandwidth Inc (BAND 0.5 04-01-28)
What sectors does Chicago Capital Management, LLC focus on?
Chicago Capital Management, LLC is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 35.9%
• Health Care: 30.9%
• Consumer Discretionary: 25.4%
• Industrials: 6.3%
• Utilities: 1.4%
Investment Profile
Chicago Capital Management, LLC's portfolio is broadly diversified and fast-trading, with 35.9% of the portfolio concentrated in Information Technology.
It has added to its PAR 1.5 10-15-27 position for two straight quarters, increasing it by $4.8M to reach $5.9M.
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Developer Access
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