CIK: 0001509973
Total reported value
$499.1M
Reporting period: 2026-06-30 · Number of holdings: 73
BRIGHT ROCK CAPITAL MANAGEMENT, LLC disclosed 73 holdings in its latest 13F filing for the period ending 2026-06-30, with total reported value of $499.1M and a quarterly turnover rate of 30.2%.
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Bright Rock Capital Management, LLC's disclosed holdings carry a Herfindahl concentration index of 0.024 — mathematically equivalent to about 42 equally-sized positions, well below its 73 actual disclosed holdings. That gap points to a strategy built around a small core of high-conviction bets rather than broad diversification.
Position sizes are fairly uniform across the portfolio (a coefficient of variation of 0.87), 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.
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Trim IYE
-66.7% -$13.8M
Sold out HON
Sold out MKC
New buy SPGI
Add NVDA
+37.5% $8.1M
Sold out CTSH
| # | Ticker | Issuer | Asset Subclass | Weight | Weight Change | Shares Change | 4Q Trend |
|---|---|---|---|---|---|---|---|
| 1 | GOOGL | Alphabet Inc-cl A | Stock-Comm Services | 5.59% | -0.38% | -25.71% | |
| 2 | MSFT | Microsoft CORP | Stock-Tech | 5.53% | +0.85% | +15.63% | |
| 3 | NVDA | Nvidia CORP | Stock-Tech | 4.41% | +1.65% | +37.50% | |
| 4 | MA | Mastercard INC - A | Stock-Financials | 3.86% | +0.16% | — | |
| 5 | MRK | Merck & Co. INC. | Stock-Healthcare | 3.66% | +0.28% | — | |
| 6 | AAPL | Apple INC | Stock-Tech | 3.25% | +0.44% | — | |
| 7 | VEEV | Veeva Systems Inc-class A | Stock-Healthcare | 3.06% | +1.57% | +100.00% | |
| 8 | UNP | Union Pacific CORP | Stock-Industrials | 2.92% | +0.35% | — | |
| 9 | TMO | Thermo Fisher Scientific INC | Stock-Healthcare | 2.76% | — | — | |
| 10 | V | Visa Inc-class A Shares | Stock-Financials | 2.39% | +0.31% | — | |
| 11 | INTU | Intuit INC | Stock-Tech | 2.35% | +0.43% | +100.00% | |
| 12 | TXN | Texas Instruments INC | Stock-Tech | 2.33% | — | -33.90% | |
| 13 | SCHW | Schwab (charles) CORP | Stock-Financials | 2.31% | — | — | |
| 14 | TJX | Tjx Companies INC | Stock-Consumer Disc | 2.13% | -0.09% | — | |
| 15 | BLK | Blackrock INC | Stock-Financials | 2.02% | — | — | |
| 16 | NEE | Nextera Energy INC | Stock-Utilities | 1.93% | -0.09% | — | |
| 17 | SPGI | S&p Global INC | Stock-Financials | 1.84% | +1.84% | NEW | |
| 18 | LULU | Lululemon Athletica INC | Stock-Consumer Disc | 1.83% | +0.62% | +100.00% | |
| 19 | LIN | Linde plc | Stock-Materials | 1.82% | +0.11% | — | |
| 20 | PEP | Pepsico INC | Stock-Consumer Staples | 1.76% | -0.24% | — | |
| 21 | CPRT | Copart INC | Stock-Industrials | 1.71% | -0.27% | — | |
| 22 | NKE | Nike INC -cl B | Stock-Consumer Disc | 1.64% | -0.44% | — | |
| 23 | ELV | Elevance Health INC | Stock-Healthcare | 1.63% | +0.41% | — | |
| 24 | WMT | Walmart INC | Stock-Consumer Staples | 1.57% | -0.13% | — | |
| 25 | ANET | Arista Networks INC | Stock-Tech | 1.53% | +0.44% | — | |
| 26 | APH | Amphenol Corp-cl A | Stock-Tech | 1.52% | +0.45% | — | |
| 27 | ACN | Accenture plc | Stock-Tech | 1.50% | +1.50% | NEW | |
| 28 | JPM | Jpmorgan Chase & Co | Stock-Financials | 1.44% | +0.16% | — | |
| 29 | VZ | Verizon Communications INC | Stock-Comm Services | 1.44% | -0.25% | — | |
| 30 | NFLX | Netflix INC | Stock-Comm Services | 1.43% | +1.43% | NEW | |
| 31 | ICE | Intercontinental Exchange In | Stock-Financials | 1.37% | -0.36% | — | |
| 32 | MS | Morgan Stanley | Stock-Financials | 1.30% | +0.29% | — | |
| 33 | SLB | Slb LTD | Stock-Energy | 1.21% | -0.11% | — | |
| 34 | IYE | Ishares U.s. Energy ETF | ETF-Other | 1.13% | -2.71% | -66.67% | |
| 35 | XOM | Exxon Mobil CORP | Stock-Energy | 1.10% | -0.24% | — | |
| 36 | CL | Colgate-palmolive Co | Stock-Consumer Staples | 1.08% | — | — | |
| 37 | MNST | Monster Beverage CORP | Stock-Consumer Staples | 1.02% | +0.26% | — | |
| 38 | ECL | Ecolab INC | Stock-Materials | 1.00% | — | — | |
| 39 | WEC | Wec Energy Group INC | Stock-Utilities | 0.98% | — | — | |
| 40 | FAST | Fastenal Co | Stock-Industrials | 0.98% | — | — | |
| 41 | EOG | Eog Resources INC | Stock-Energy | 0.91% | -0.09% | — | |
| 42 | AMZN | Amazon.com INC | Stock-Consumer Disc | 0.91% | +0.13% | — | |
| 43 | AME | Ametek INC | Stock-Industrials | 0.85% | +0.11% | — | |
| 44 | ZTS | Zoetis INC | Stock-Healthcare | 0.78% | -0.48% | — | |
| 45 | IDXX | Idexx Laboratories INC | Stock-Healthcare | 0.74% | — | — | |
| 46 | HSY | Hershey Co/the | Stock-Consumer Staples | 0.70% | -0.12% | — | |
| 47 | OKE | Oneok INC | Stock-Energy | 0.61% | — | — | |
| 48 | RMD | Resmed INC | Stock-Healthcare | 0.61% | -0.08% | — | |
| 49 | LYV | Live Nation Entertainment In | Stock-Comm Services | 0.55% | +0.10% | — | |
| 50 | JKHY | Jack Henry & Associates INC | Stock-Tech | 0.54% | — | — |
Performance for Q3 2026
-0.2%
Performance Last 4 Quarters
+10.5%
Based on 71% of reported portfolio value with available pricing
| Period | Holdings | Total value | Stability | Top holdings |
|---|---|---|---|---|
| 2026-06-30 | 73 | $499.1M | 30 | |
| 2026-03-31 | 75 | $505.9M | 33 | |
| 2025-12-31 | 77 | $508.7M | 20 | |
| 2025-09-30 | 73 | $510.2M | 36 | |
| 2025-06-30 | 74 | $494.0M | 0 | |
| 2025-03-31 | 76 | $474.7M | 100 | |
| 2024-12-31 | 71 | $468.9M | 0 | |
| 2024-09-30 | 71 | $497.3M | 0 | |
| 2024-06-30 | 70 | $474.4M | 0 | |
| 2024-03-31 | 69 | $482.6M | 0 | |
| 2023-12-31 | 68 | $441.6M | 0 | |
| 2023-09-30 | 72 | $409.4M | 0 | |
| 2023-06-30 | 80 | $429.0M | 0 | |
| 2023-03-31 | 79 | $400.0M | 0 | |
| 2022-12-31 | 79 | $385.7M | 0 | |
| 2022-09-30 | 82 | $356.5M | 0 | |
| 2022-06-30 | 81 | $370.5M | 0 | |
| 2022-03-31 | 76 | $423.7M | 0 | |
| 2021-12-31 | 76 | $440.7M | 0 | |
| 2021-09-30 | 73 | $399.7M | 0 | |
| 2021-06-30 | 76 | $415.7M | 97 | |
| 2021-03-31 | 75 | $391.2M | 14 | |
| 2020-12-31 | 75 | $367.2M | 22 | |
| 2020-09-30 | 75 | $337.2M | 14 | |
| 2020-06-30 | 74 | $320.0M | 36 | |
| 2020-03-31 | 76 | $274.6M | 36 | |
| 2019-12-31 | 74 | $341.1M | 14 | |
| 2019-09-30 | 74 | $319.7M | 12 | |
| 2019-06-30 | 74 | $313.2M | 21 | |
| 2019-03-31 | 76 | $299.0M | 23 | |
| 2018-12-31 | 74 | $266.0M | 36 | |
| 2018-09-30 | 76 | $306.4M | 21 | |
| 2018-06-30 | 76 | $291.7M | 28 | |
| 2018-03-31 | 78 | $291.0M | 38 | |
| 2017-12-31 | 90 | $368.6M | 11 | |
| 2017-09-30 | 89 | $344.7M | 9 | |
| 2017-06-30 | 88 | $338.9M | 15 | |
| 2017-03-31 | 88 | $334.6M | 15 | |
| 2016-12-31 | 89 | $322.6M | 17 | |
| 2016-09-30 | 89 | $315.8M | 18 | |
| 2016-06-30 | 88 | $308.7M | 13 | |
| 2016-03-31 | 90 | $292.7M | 15 | |
| 2015-12-31 | 91 | $269.8M | 32 | |
| 2015-09-30 | 85 | $249.4M | 31 | |
| 2015-06-30 | 88 | $268.9M | 17 | |
| 2015-03-31 | 89 | $268.1M | 15 | |
| 2014-12-31 | 88 | $256.0M | 21 | |
| 2014-09-30 | 88 | $234.4M | 26 | |
| 2014-06-30 | 79 | $213.0M | 17 | |
| 2014-03-31 | 80 | $196.7M | 34 | |
| 2013-12-31 | 81 | $190.3M | 23 | |
| 2013-09-30 | 82 | $178.1M | 51 | |
| 2013-06-30 | 80 | $162.9M | 0 |
Bright Rock Capital Management, LLC's most significant position changes for 2026-06-30: Sold out: Honeywell International INC (HON); Sold out: Mccormick & Co-non Vtg Shrs (MKC); New buy: S&p Global INC (SPGI); Sold out: Cognizant Tech Solutions-a (CTSH); New buy: Accenture plc (ACN).
| # | Ticker | Issuer | Weight Change | Shares Change | Action |
|---|---|---|---|---|---|
| 1 | SPGI | S&p Global INC | +1.8% | NEW | New buy |
| 2 | NVDA | Nvidia CORP | +1.7% | +37.50% | Add |
| 3 | VEEV | Veeva Systems Inc-class A | +1.6% | +100.00% | Add |
| 4 | ACN | Accenture plc | +1.5% | NEW | New buy |
| 5 | NFLX | Netflix INC | +1.4% | NEW | New buy |
| 6 | MSFT | Microsoft CORP | +0.9% | +15.63% | Add |
| 7 | LULU | Lululemon Athletica INC | +0.6% | +100.00% | Add |
| 8 | APH | Amphenol Corp-cl A | +0.5% | — | Unchanged |
| 9 | ANET | Arista Networks INC | +0.4% | — | Unchanged |
| 10 | AAPL | Apple INC | +0.4% | — | Unchanged |
| 11 | INTU | Intuit INC | +0.4% | +100.00% | Add |
| 12 | ELV | Elevance Health INC | +0.4% | — | Unchanged |
| 13 | UNP | Union Pacific CORP | +0.4% | — | Unchanged |
| 14 | V | Visa Inc-class A Shares | +0.3% | — | Unchanged |
| 15 | DVN | Devon Energy CORP | +0.3% | NEW | New buy |
| 16 | MS | Morgan Stanley | +0.3% | — | Unchanged |
| 17 | MRK | Merck & Co. INC. | +0.3% | — | Unchanged |
| 18 | MNST | Monster Beverage CORP | +0.3% | — | Unchanged |
| 19 | JPM | Jpmorgan Chase & Co | +0.2% | — | Unchanged |
| 20 | MA | Mastercard INC - A | +0.2% | — | Unchanged |
| 21 | AMZN | Amazon.com INC | +0.1% | — | Unchanged |
| 22 | HEI | Heico CORP | +0.1% | — | Unchanged |
| 23 | WST | West Pharmaceutical Services | +0.1% | — | Unchanged |
| 24 | AME | Ametek INC | +0.1% | — | Unchanged |
| 25 | LIN | Linde plc | +0.1% | — | Unchanged |
| 26 | LYV | Live Nation Entertainment In | +0.1% | — | Unchanged |
| 27 | RMD | Resmed INC | -0.1% | — | Unchanged |
| 28 | TJX | Tjx Companies INC | -0.1% | — | Unchanged |
| 29 | NEE | Nextera Energy INC | -0.1% | — | Unchanged |
| 30 | EOG | Eog Resources INC | -0.1% | — | Unchanged |
| 31 | SLB | Slb LTD | -0.1% | — | Unchanged |
| 32 | ROL | Rollins INC | -0.1% | — | Unchanged |
| 33 | HSY | Hershey Co/the | -0.1% | — | Unchanged |
| 34 | WMT | Walmart INC | -0.1% | — | Unchanged |
| 35 | TSCO | Tractor Supply Company | -0.2% | — | Unchanged |
| 36 | XOM | Exxon Mobil CORP | -0.2% | — | Unchanged |
| 37 | PEP | Pepsico INC | -0.2% | — | Unchanged |
| 38 | VZ | Verizon Communications INC | -0.3% | — | Unchanged |
| 39 | CPRT | Copart INC | -0.3% | — | Unchanged |
| 40 | CTRA | Coterra Energy INC | -0.4% | EXIT | Sold out |
| 41 | ICE | Intercontinental Exchange In | -0.4% | — | Unchanged |
| 42 | GOOGL | Alphabet Inc-cl A | -0.4% | -25.71% | Trim |
| 43 | NKE | Nike INC -cl B | -0.4% | — | Unchanged |
| 44 | ZTS | Zoetis INC | -0.5% | — | Unchanged |
| 45 | META | Meta Platforms Inc-class A | -0.9% | EXIT | Sold out |
| 46 | XLK | Ss Technology Select Sector | -1% | EXIT | Sold out |
| 47 | CTSH | Cognizant Tech Solutions-a | -1.6% | EXIT | Sold out |
| 48 | MKC | Mccormick & Co-non Vtg Shrs | -2.3% | EXIT | Sold out |
| 49 | HON | Honeywell International INC | -2.4% | EXIT | Sold out |
| 50 | IYE | Ishares U.s. Energy ETF | -2.7% | -66.67% | Trim |
| Period | Filed | Type | EDGAR |
|---|---|---|---|
| 2026-06-30 | 2026-07-08 | 13F-HR | View on EDGAR |
| 2026-03-31 | 2026-04-16 | 13F-HR | View on EDGAR |
| 2025-12-31 | 2026-01-15 | 13F-HR | View on EDGAR |
| 2025-09-30 | 2025-11-04 | 13F-HR | View on EDGAR |
| 2025-06-30 | 2025-07-10 | 13F-HR | View on EDGAR |
| 2025-03-31 | 2025-04-16 | 13F-HR | View on EDGAR |
| 2024-12-31 | 2025-01-14 | 13F-HR | View on EDGAR |
| 2024-09-30 | 2024-10-03 | 13F-HR | View on EDGAR |
| 2024-06-30 | 2024-07-23 | 13F-HR | View on EDGAR |
| 2024-03-31 | 2024-04-11 | 13F-HR | View on EDGAR |
| 2023-12-31 | 2024-01-11 | 13F-HR | View on EDGAR |
| 2023-09-30 | 2023-10-26 | 13F-HR | View on EDGAR |
| 2023-06-30 | 2023-07-27 | 13F-HR | View on EDGAR |
| 2023-03-31 | 2023-04-24 | 13F-HR | View on EDGAR |
| 2022-12-31 | 2023-01-24 | 13F-HR | View on EDGAR |
| 2022-09-30 | 2022-10-19 | 13F-HR | View on EDGAR |
| 2022-06-30 | 2022-07-13 | 13F-HR | View on EDGAR |
| 2022-03-31 | 2022-04-18 | 13F-HR | View on EDGAR |
| 2021-12-31 | 2022-01-27 | 13F-HR | View on EDGAR |
| 2021-09-30 | 2021-10-25 | 13F-HR | View on EDGAR |
| 2021-06-30 | 2021-07-19 | 13F-HR | View on EDGAR |
| 2021-03-31 | 2021-04-22 | 13F-HR | View on EDGAR |
| 2020-12-31 | 2021-01-04 | 13F-HR | View on EDGAR |
| 2020-09-30 | 2020-10-08 | 13F-HR | View on EDGAR |
| 2020-06-30 | 2020-07-09 | 13F-HR | View on EDGAR |
| 2020-03-31 | 2020-04-16 | 13F-HR | View on EDGAR |
| 2019-12-31 | 2020-01-06 | 13F-HR | View on EDGAR |
| 2019-09-30 | 2019-10-08 | 13F-HR | View on EDGAR |
| 2019-06-30 | 2019-07-05 | 13F-HR | View on EDGAR |
| 2019-03-31 | 2019-04-08 | 13F-HR | View on EDGAR |
| 2018-12-31 | 2019-01-15 | 13F-HR | View on EDGAR |
| 2018-09-30 | 2018-10-05 | 13F-HR | View on EDGAR |
| 2018-06-30 | 2018-07-06 | 13F-HR | View on EDGAR |
| 2018-03-31 | 2018-04-09 | 13F-HR | View on EDGAR |
| 2017-12-31 | 2018-01-11 | 13F-HR | View on EDGAR |
| 2017-09-30 | 2017-11-01 | 13F-HR | View on EDGAR |
| 2017-06-30 | 2017-08-01 | 13F-HR | View on EDGAR |
| 2017-03-31 | 2017-04-20 | 13F-HR | View on EDGAR |
| 2016-12-31 | 2017-01-30 | 13F-HR | View on EDGAR |
| 2016-09-30 | 2016-10-27 | 13F-HR | View on EDGAR |
| 2016-06-30 | 2016-07-21 | 13F-HR | View on EDGAR |
| 2016-03-31 | 2016-05-04 | 13F-HR | View on EDGAR |
| 2015-12-31 | 2016-01-28 | 13F-HR | View on EDGAR |
| 2015-09-30 | 2015-10-28 | 13F-HR | View on EDGAR |
| 2015-06-30 | 2015-07-23 | 13F-HR | View on EDGAR |
| 2015-03-31 | 2015-04-29 | 13F-HR | View on EDGAR |
| 2014-12-31 | 2015-02-04 | 13F-HR | View on EDGAR |
| 2014-09-30 | 2014-11-06 | 13F-HR | View on EDGAR |
| 2014-06-30 | 2014-08-04 | 13F-HR | View on EDGAR |
| 2014-03-31 | 2014-05-02 | 13F-HR | View on EDGAR |
| 2013-12-31 | 2014-02-07 | 13F-HR | View on EDGAR |
| 2013-09-30 | 2013-10-21 | 13F-HR | View on EDGAR |
| 2013-06-30 | 2013-08-12 | 13F-HR | View on EDGAR |
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