AC
Atalan Capital Partners, LP 13F Holdings & Recent Stock Buys (Q2 2026)
Atalan Capital Partners, LPCIK: 0001662906
Sector-focusedContrarianQuality / disciplined sizing
Total reported value
$1.6B
Reporting period: 2026-06-30 · Number of holdings: 9
Atalan Capital Partners, LP disclosed 9 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $1.6B and a quarterly turnover rate of 60.3%.
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Personality snowflake
- Concentration
- 70.28
- Portfolio Stability
- 60.32
- Momentum
- 0
- Sector conviction
- 100
- Diversification
- 18
- Sizing Uniformity
- 91.91
Atalan Capital Partners, LP's disclosed holdings carry a Herfindahl concentration index of 0.176 — mathematically equivalent to about 6 equally-sized positions, close to its 9 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 0.81), 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.
Source and citation information
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Recent moves
View source Form 13F filing on SEC.govNew buy GLW
Add STX
-20.3% $271.3M
Sold out TLN
Trim APH
-43.6% -$25.8M
Add TTMI
+31.7% $114.4M
Trim SPOT
+4.3% -$1.3M
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 | STX | Seagate Technology Holdings plc | Stock-Tech | 33.92% | +7.97% | -20.28% | |
| 2 | MA | Mastercard Inc - A | Stock-Financials | 13.44% | +2.63% | +81.82% | |
| 3 | TTMI | Ttm Technologies | Stock-Tech | 11.61% | +4.71% | +31.70% | |
| 4 | GLW | Corning Inc | Stock-Tech | 9.36% | +9.36% | NEW | |
| 5 | TDG | Transdigm Group Inc | Stock-Industrials | 7.15% | -1.88% | +3.59% | |
| 6 | USFD | US Foods Holding CORP | Stock-Consumer Staples | 6.83% | -2.10% | +3.57% | |
| 7 | SPOT | Spotify Technology S.A. | Stock-Comm Services | 6.75% | -3.51% | +4.33% | |
| 8 | APH | Amphenol Corp-cl A | Stock-Tech | 5.87% | -5.34% | -43.57% | |
| 9 | HQY | Healthequity Inc | Stock-Healthcare | 5.07% | -1.74% | +3.58% |
Portfolio Performance
Performance for Q3 2026
-2.3%
Performance Last 4 Quarters
+67.6%
- Stdev
- +24%
- Beta
- +1.46
- Alpha
- +7.2%
- Max Drawdown
- -10.2%
- Annualized Perf
- +39.6%
- Batting Avg vs S&P
- +58.3%
- Sortino
- +3.93
- Stutzer
- +0.47
- Treynor
- +0.25
- Sterling
- +2.17
- Calmar
- +3.87
- Information Ratio
- +1.04
- Tracking Error
- +15.9%
- Stdev Down
- +9.3%
- Winning Months %
- +63.9%
- Losing Months %
- +36.1%
- Best 12 Months
- +105.3%
- Worst 12 Months
- +4.7%
- Efficiency Ratio
- +0.85
- Sharpe
- +1.52
- Stdev Sectors
- +19.9%
- Skewness
- +0.77
- Kurtosis
- +0.96
- Upside Potential
- +5.59
Reported value over time
Sector allocation
Sector allocation over time
Quarterly history
| Period | Holdings | Total value | Stability | Top holdings | |
|---|---|---|---|---|---|
| 2026 Q2 | 9 | $1.6B | 60 | ||
| 2026 Q1 | 10 | $1.1B | 54 | ||
| 2025 Q4 | 11 | $1.4B | 21 | ||
| 2025 Q3 | 10 | $1.4B | 47 | ||
| 2025 Q2 | 11 | $1.3B | 0 | ||
| 2025 Q1 | 10 | $1.1B | 100 | ||
| 2024 Q4 | 9 | $1.0B | 0 | ||
| 2024 Q3 | 9 | $1.2B | 0 | ||
| 2024 Q2 | 9 | $1.1B | 0 | ||
| 2024 Q1 | 10 | $1.2B | 0 | ||
| 2023 Q4 | 10 | $1.1B | 0 | ||
| 2023 Q3 | 11 | $1.1B | 0 | ||
| 2023 Q2 | 15 | $1.3B | 0 | ||
| 2023 Q1 | 14 | $1.2B | 0 | ||
| 2022 Q4 | 12 | $1.1B | 0 | ||
| 2022 Q3 | 11 | $909.1M | 0 | ||
| 2022 Q2 | 12 | $1.0B | 0 | ||
| 2022 Q1 | 14 | $1.4B | 0 | ||
| 2021 Q4 | 13 | $1.6B | 0 | ||
| 2021 Q3 | 15 | $1.6B | 0 | ||
| 2021 Q2 | 16 | $1.6B | 94 | ||
| 2021 Q1 | 18 | $1.5B | 78 | ||
| 2020 Q4 | 13 | $1.1B | 48 | ||
| 2020 Q3 | 13 | $1.1B | 20 | ||
| 2020 Q2 | 15 | $1.0B | 41 | ||
| 2020 Q1 | 10 | $705.9M | 40 | ||
| 2019 Q4 | 13 | $939.3M | 23 | ||
| 2019 Q3 | 13 | $829.2M | 53 | ||
| 2019 Q2 | 13 | $772.8M | 37 | ||
| 2019 Q1 | 12 | $643.0M | 46 | ||
| 2018 Q4 | 10 | $469.2M | 35 | ||
| 2018 Q3 | 10 | $420.8M | 38 | ||
| 2018 Q2 | 12 | $470.1M | 49 | ||
| 2018 Q1 | 12 | $421.7M | 46 | ||
| 2017 Q4 | 14 | $344.9M | 81 | ||
| 2017 Q3 | 11 | $243.5M | 57 | ||
| 2017 Q2 | 12 | $236.8M | 40 | ||
| 2017 Q1 | 15 | $257.1M | 57 | ||
| 2016 Q4 | 14 | $212.4M | 40 | ||
| 2016 Q3 | 14 | $210.8M | 55 | ||
| 2016 Q2 | 13 | $178.7M | 58 | ||
| 2016 Q1 | 15 | $179.4M | 55 | ||
| 2015 Q4 | 15 | $155.3M | 0 |
* This report is exclusively curated by the AlphaSMO team. AlphaSMO is the web's most authoritative 13F / Inside Trader database, delivering precise insider trading and institutional holdings insights.
Holding changes this quarter
Atalan Capital Partners, LP's most significant position changes for 2026-06-30: New buy: Corning Inc (GLW); Sold out: Talen Energy CORP (TLN); Sold out: Western Digital CORP (WDC); Trim: Seagate Technology Holdings plc (STX) — shares -20.28%; Trim: Amphenol Corp-cl A (APH) — shares -43.57%.
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | GLW | Corning Inc | +9.4% | NEW | New buy |
| 2 | STX | Seagate Technology Holdings plc | +8% | -20.28% | Trim |
| 3 | TTMI | Ttm Technologies | +4.7% | +31.70% | Add |
| 4 | MA | Mastercard Inc - A | +2.6% | +81.82% | Add |
| 5 | HQY | Healthequity Inc | -1.7% | +3.58% | Add |
| 6 | TDG | Transdigm Group Inc | -1.9% | +3.59% | Add |
| 7 | USFD | US Foods Holding CORP | -2.1% | +3.57% | Add |
| 8 | WDC | Western Digital CORP | -3.4% | EXIT | Sold out |
| 9 | SPOT | Spotify Technology S.A. | -3.5% | +4.33% | Add |
| 10 | APH | Amphenol Corp-cl A | -5.3% | -43.57% | Trim |
| 11 | TLN | Talen Energy CORP | -6.8% | EXIT | Sold out |
Filing History
FAQ
What is Atalan Capital Partners, LP and what type of investor is it?
Atalan Capital Partners, LP 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 (2026-06-30), the firm manages a tracked equity portfolio valued at approximately $1.6B, spread across 9 disclosed positions.
What are Atalan Capital Partners, LP's largest equity positions?
Based on the latest 13F filing, Atalan Capital Partners, LP's top holdings by market value are:
1. Seagate Technology Holdings plc (STX) — $552.9M (33.9%)
2. Mastercard Inc - A (MA) — $219.1M (13.4%)
3. Ttm Technologies (TTMI) — $189.2M (11.6%)
4. Corning Inc (GLW) — $152.6M (9.4%)
5. Transdigm Group Inc (TDG) — $116.6M (7.2%)
What changes did Atalan Capital Partners, LP make in its most recent portfolio filing?
In the latest reported quarter, Atalan Capital Partners, LP made 11 notable position adjustments: 1 new positions were initiated, 6 existing holdings were added to, 2 positions were partially reduced, and 2 were completely exited. The largest of these moves: New buy: Corning Inc (GLW); Sold out: Talen Energy CORP (TLN); Sold out: Western Digital CORP (WDC); Trim: Seagate Technology Holdings plc (STX) — shares -20.28%; Trim: Amphenol Corp-cl A (APH) — shares -43.57%
What sectors does Atalan Capital Partners, LP focus on?
Atalan Capital Partners, LP is concentrated in the following sectors based on its current disclosed equity portfolio:
• Information Technology: 60.8%
• Financials: 13.4%
• Industrials: 7.2%
• Consumer Staples: 6.8%
• Communication Services: 6.8%
• Health Care: 5.1%
Investment Profile
Atalan Capital Partners, LP returned an annualized 39.6% over the trailing 36 months — outperforming the S&P 500 by 7.2 points — based on a reconstructed track record of its disclosed 13F positions, with a beta of 1.46 (more volatile than the market) and a 58% quarterly batting average against the index.
Its portfolio is concentrated and fast-trading, with 60.8% of the portfolio concentrated in Information Technology.
Its turnover score has risen from 0 to 60 over the past 4 quarters — a shift toward more active trading.
It has added to its STX position over the past two quarters (+$347.3M, now $552.9M), while trimming APH over the same stretch (-$90.7M, still holding $95.8M).
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Developer Access
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