Q3 2026 13F · SEC CIK 1509973

Bright Rock Capital Management, LLC

Mutual fund managerFiled 2026-10-05 for Q3 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $529.1M
Reported positions: 72
Top holdings a year, 3 yrs: +16.9%
Assets under management: $536.0M

Bright Rock Capital Management, LLC is a mutual fund manager that reported 72 positions worth $529.1M in its Q3 2026 13F, filed 2026-10-05. Its largest holdings were Microsoft Corp (MSFT, 7.2%), Alphabet Inc (GOOGL, 5.1%), Nvidia Corporation (NVDA, 4.7%). A portfolio copying its top holdings returned 16.9% a year over the last 3 years, against 22.3% for the S&P 500.

Bright Rock Capital Management, LLC holdings largest 50 of 72 positions.

Weights are shares of the filer's total reported 13F value, compared with Q2 2026. Share changes may reflect splits; weight changes also reflect price moves. A 13F shows long US-listed positions only, up to 135 days after the fact.

Bright Rock Capital Management, LLC 13F holdings
Stock	% of 13F value	Q2 2026	Shares	Share change	Reported value
MSFTMicrosoft Corp	7.2%	5.5%	74,000	+0.0%	$38.0M
GOOGLAlphabet Inc	5.1%	5.6%	78,000	+0.0%	$26.8M
NVDANvidia Corporation	4.7%	4.4%	110,000	+0.0%	$25.1M
MAMastercard Incorporated	3.9%	3.9%	37,500	+0.0%	$20.7M
MRKMerck & Co Inc	3.9%	3.7%	142,000	+0.0%	$20.6M
AAPLApple Inc	3.5%	3.2%	56,000	+0.0%	$18.6M
TMOThermo Fisher Scientific Inc	3.5%	2.8%	27,500	+0.0%	$18.6M
AMZNAmazon Com Inc	2.8%	0.9%	59,000	+210.5%	$14.7M
UNPUnion Pac Corp	2.8%	2.9%	53,500	+0.0%	$14.6M
NKENike Inc	2.7%	1.6%	398,000	+100.0%	$14.1M
VVisa Inc	2.4%	2.4%	34,750	+0.0%	$12.5M
INTUIntuit	2.3%	2.4%	45,000	+0.0%	$12.4M
VEEVVeeva Sys Inc	2.3%	3.1%	43,000	-50.0%	$12.3M
SCHWCharles Schwab Corp (the)	2.3%	2.3%	125,000	+0.0%	$12.2M
BLKBlackrock Inc	2.1%	2.0%	10,500	+0.0%	$11.1M
TXNTexas Instrs Inc	2.1%	2.3%	39,000	+0.0%	$10.9M
NFLXNetflix Inc.	2.0%	1.4%	150,000	+50.0%	$10.4M
CPRTCopart Inc	2.0%	1.7%	382,000	+26.5%	$10.4M
TJXTjx Cos Inc New	1.8%	2.1%	70,000	+0.0%	$9.3M
SPGIS&p Global Inc	1.7%	1.8%	22,500	+0.0%	$8.9M
HONAHoneywell Aerospace Inc	1.6%	—	56,250	—	$8.7M
ICEIntercontinental Exchange Inc	1.6%	1.4%	55,500	+0.0%	$8.4M
NEENextera Energy Inc	1.6%	1.9%	110,000	+0.0%	$8.3M
LINLinde PLC	1.6%	1.8%	17,500	+0.0%	$8.3M
PEPPepsico Inc	1.6%	1.8%	65,000	+0.0%	$8.2M
ELVElevance Health Inc Formerly	1.5%	1.6%	21,000	+0.0%	$8.2M
VZVerizon Communications Inc	1.5%	1.4%	170,000	+0.0%	$7.8M
JPMJpmorgan Chase & Co	1.4%	1.4%	22,000	+0.0%	$7.3M
APHAmphenol Corp	1.4%	1.5%	86,000	+100.0%	$7.2M
WMTWalmart Inc	1.4%	1.6%	69,000	+0.0%	$7.2M
IYEIshares Tr	1.2%	1.1%	100,000	+0.0%	$6.5M
CSCOCisco Sys Inc	1.2%	—	60,000	—	$6.5M
SLBSlb Limited	1.2%	1.2%	130,000	+0.0%	$6.3M
MSMorgan Stanley	1.1%	1.3%	31,000	+0.0%	$5.8M
ANETArista Networks Inc	1.0%	1.5%	25,000	-44.4%	$5.1M
CLColgate Palmolive Co	1.0%	1.1%	59,000	+0.0%	$5.0M
FASTFastenal Co	1.0%	1.0%	101,600	+0.0%	$5.0M
ECLEcolab Inc	0.9%	1.0%	18,000	+0.0%	$4.9M
EOGEog Res Inc	0.9%	0.9%	35,000	+0.0%	$4.8M
MNSTMonster Beverage Corp New	0.8%	1.0%	106,000	+100.0%	$4.4M
AMEAmetek Inc	0.8%	0.8%	17,500	+0.0%	$4.3M
WECWec Energy Group Inc	0.8%	1.0%	42,000	+0.0%	$4.2M
ZTSZoetis Inc	0.7%	0.8%	54,000	+0.0%	$3.8M
IDXXIdexx Labs Inc	0.7%	0.7%	7,000	+0.0%	$3.7M
RMDResmed Inc	0.6%	0.6%	15,500	+0.0%	$3.4M
UIUbiquiti Inc	0.6%	—	6,000	—	$3.4M
HSYHershey Co	0.6%	0.7%	20,000	+0.0%	$3.2M
DXCMDexcom Inc	0.6%	—	36,000	—	$3.1M
JKHYHenry Jack & Assoc Inc Com	0.5%	0.5%	19,600	+0.0%	$2.8M
LECOLincoln Elec Hldgs Inc	0.5%	—	10,000	—	$2.6M

What Bright Rock Capital Management, LLC bought and sold in Q3 2026, against Q2 2026.

New positions

Q2 2026's filing was too long to tell new positions apart.

Share counts compared with the Q2 2026 13F; a split also changes share counts. The latest filing lists more than 50 positions, so a position that left the top 50 may still be held.

How the holdings did against the S&P 500.

1 year: +13.4% /yr; S&P 500 +11.7%
3 years: +16.9% /yr; S&P 500 +22.3%
5 years: +9.7% /yr; S&P 500 +10.6%

A portfolio of the filer's 20 largest 13F positions, weighted by value, bought the trading day after each 13F was filed and held until the next one was: what copying this filer could have earned. 13Fs show long US-listed positions only, so this is an estimate of the stock picks, not the fund's reported returns.

Reported 13F value by quarter.

13F value by quarter
Quarter	13F value	Positions
Q3 2026	$529.1M	72
Q2 2026	$499.1M	73
Q1 2026	$505.9M	75
Q4 2025	$508.7M	77
Q3 2025	$510.2M	73
Q2 2025	$494.0M	74
Q1 2025	$474.7M	76
Q4 2024	$468.9M	71
Q3 2024	$497.3M	71
Q2 2024	$474.4M	70
Q1 2024	$482.6M	69
Q4 2023	$441.6M	68

Questions about Bright Rock Capital Management, LLC's portfolio

What stocks does Bright Rock Capital Management, LLC own?

Bright Rock Capital Management, LLC's latest 13F, for Q3 2026 and filed Oct 5, 2026, lists 72 positions worth $529.1M. The largest are Microsoft Corp (MSFT) at 7.2%, Alphabet Inc (GOOGL) at 5.1%, Nvidia Corporation (NVDA) at 4.7%, Mastercard Incorporated (MA) at 3.9% and Merck & Co Inc (MRK) at 3.9%.

What did Bright Rock Capital Management, LLC buy last quarter?

In Q3 2026, Bright Rock Capital Management, LLC added Amazon Com Inc (AMZN) (+210.5% shares), Nike Inc (NKE) (+100.0% shares) and Amphenol Corp (APH) (+100.0% shares), compared with its Q2 2026 filing.

What did Bright Rock Capital Management, LLC sell last quarter?

In Q3 2026, Bright Rock Capital Management, LLC cut from its top 50 Lululemon Athletica Inc (LULU), cut from its top 50 Accenture PLC Ireland (ACN), cut from its top 50 Exxon Mobil Corp (XOM), cut from its top 50 Oneok Inc New (OKE), cut from its top 50 Live Nation Entertainment in (LYV), Veeva Sys Inc (VEEV) (-50.0% shares) and Arista Networks Inc (ANET) (-44.4% shares), compared with its Q2 2026 filing.

How has Bright Rock Capital Management, LLC's portfolio performed?

A portfolio copying Bright Rock Capital Management, LLC's 20 largest 13F holdings each quarter, from the day each filing was public, returned +16.9% a year over the last 3 years, against +22.3% for the S&P 500. Over 1 year: +13.4% against +11.7%. Over 5 years: +9.7% a year against +10.6%.

When is Bright Rock Capital Management, LLC's next 13F filing due?

13F filings are due 45 days after each quarter ends. Bright Rock Capital Management, LLC's filing for the quarter ending Dec 31, 2026 is due by Feb 14, 2027; this page updates the day after it is published.

How much money does Bright Rock Capital Management, LLC manage?

Bright Rock Capital Management, LLC reported $536.0M of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $529.1M.