Q2 2026 13F · SEC CIK 1856103

Pinnbrook Capital Management LP

Hedge fundFiled 2026-08-12 for Q2 2026. Open the filing ↗ · All SEC filings ↗

Reported 13F value: $601.0M
Reported positions: 88
Top holdings a year, 3 yrs: +18.3%
Assets under management: $1.1B

Pinnbrook Capital Management LP is a hedge fund that reported 88 positions worth $601.0M in its Q2 2026 13F, filed 2026-08-12. Its largest holdings were Csx Corp (CSX, 7.4%), Kodiak Gas Svcs Inc (KGS, 4.9%), Jabil Inc (JBL, 3.8%). A portfolio copying its top holdings returned 18.3% a year over the last 3 years, against 20.4% for the S&P 500.

Pinnbrook Capital Management LP holdings largest 50 of 88 positions.

Weights are shares of the filer's total reported 13F value, compared with Q1 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.

Pinnbrook Capital Management LP 13F holdings
Stock	% of 13F value	Q1 2026	Shares	Share change	Reported value
CSXCsx Corp	7.4%	2.5%	939,978	+1156.7%	$44.7M
KGSKodiak Gas Svcs Inc	4.9%	8.3%	391,854	+124.1%	$29.4M
JBLJabil Inc	3.8%	4.8%	58,867	+167.2%	$22.7M
NTRANatera Inc	3.1%	New	69,300	—	$18.8M
WABWabtec	3.1%	1.6%	69,107	+760.0%	$18.6M
PWRQuanta Svcs Inc	2.8%	New	23,734	—	$17.1M
TKRTimken Co Com	2.7%	New	113,500	—	$16.5M
ATIAti Inc	2.7%	0.8%	82,081	+1089.6%	$16.2M
TXNTexas Instrs Inc	2.5%	New	50,400	—	$15.0M
ARMKAramark	2.4%	New	257,700	—	$14.7M
DTMDt Midstream Inc	2.4%	New	97,009	—	$14.2M
STXSeagate Technology Hldngs Pl	2.2%	0.8%	13,840	+432.3%	$13.4M
PFGCPerformance Food Group Co	2.1%	New	115,000	—	$12.9M
WDCWestern Digital Corp Com	2.0%	2.9%	19,280	+46.1%	$12.3M
MTZMasTec Inc	1.9%	9.5%	27,243	-24.7%	$11.3M
DBAInvesco Db Agriculture Fund	1.9%	New	421,600	—	$11.2M
VIKViking Hldgs Ltd	1.7%	0.9%	95,300	+533.3%	$10.0M
KNXKnight-Swift Transn Hldgs in	1.7%	New	127,400	—	$9.9M
STMStmicroelectronics N V Ny Registry	1.6%	New	131,347	—	$9.8M
GOOGLAlphabet Inc	1.5%	New	25,440	—	$9.1M
HWMHowmet Aerospace Inc	1.5%	New	33,317	—	$9.0M
SPHRSphere Entertainment Co	1.5%	4.1%	51,208	+19.6%	$8.9M
NVTNvent Elec PLC	1.5%	1.6%	52,110	+206.5%	$8.8M
MATXMatson Inc Com Npv	1.5%	1.2%	45,814	+409.0%	$8.8M
FTITechnipfmc PLC	1.4%	2.5%	129,105	+192.6%	$8.6M
ROSTRoss Stores Inc	1.4%	4.2%	39,593	+65.5%	$8.4M
ESEEsco Technologies Inc	1.3%	New	22,960	—	$8.0M
LLYEli Lilly & Co	1.3%	New	6,640	—	$8.0M
TPXSomnigroup International Inc	1.3%	New	101,429	—	$8.0M
SNXTD SYNNEX Corp	1.2%	New	27,600	—	$7.4M
VTRVentas Inc	1.2%	New	81,200	—	$7.2M
FLEXFlex Ltd Ord	1.2%	New	43,700	—	$7.1M
VLOValero Energy Corp	1.2%	New	26,636	—	$6.9M
CDWCdw Corp/de	1.0%	New	44,300	—	$6.2M
TWLOTwilio Inc	1.0%	New	29,600	—	$6.1M
GFSGlobalfoundries Inc	1.0%	New	71,600	—	$5.9M
WELLWelltower Inc	1.0%	New	25,500	—	$5.8M
INIOInnio NV	0.9%	New	142,900	—	$5.7M
MKSIMks Inc.	0.9%	New	12,700	—	$5.6M
DOCNDigitalocean Hldgs Inc	0.9%	New	34,262	—	$5.4M
HHyatt Hotels Corp	0.9%	New	26,500	—	$5.1M
ARWArrow Electrs Inc	0.8%	New	23,700	—	$5.1M
HUTHut 8 Corp	0.8%	New	43,200	—	$5.0M
CRLCharles Riv Labs Intl Inc	0.8%	New	21,300	—	$4.8M
TREXTrex Company, Inc.	0.8%	New	93,900	—	$4.7M
DDOGDatadog Inc	0.8%	New	17,655	—	$4.6M
TSMTaiwan Semiconductor Manufac	0.7%	New	8,945	—	$4.3M
COHRCoherent Corp	0.7%	New	10,160	—	$4.0M
FTNTFortinet Inc	0.7%	New	25,900	—	$4.0M
SNOWSnowflake Inc	0.6%	New	15,070	—	$3.8M

What Pinnbrook Capital Management LP bought and sold in Q2 2026, against Q1 2026.

Left the top 50

Share counts compared with the Q1 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: +10.3% /yr; S&P 500 +20.1%
3 years: +18.3% /yr; S&P 500 +20.4%
5 years: +13.7% /yr; S&P 500 +13.0%

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
Q2 2026	$601.0M	88
Q1 2026	$122.4M	33
Q4 2025	$386.8M	84
Q3 2025	$540.5M	115
Q2 2025	$382.0M	69
Q1 2025	$154.9M	37
Q4 2024	$285.0M	65
Q3 2024	$331.0M	64
Q2 2024	$331.3M	48
Q1 2024	$578.3M	78
Q4 2023	$427.8M	58
Q3 2023	$151.9M	33

Questions about Pinnbrook Capital Management LP's portfolio

What stocks does Pinnbrook Capital Management LP own?

Pinnbrook Capital Management LP's latest 13F, for Q2 2026 and filed Aug 12, 2026, lists 88 positions worth $601.0M. The largest are Csx Corp (CSX) at 7.4%, Kodiak Gas Svcs Inc (KGS) at 4.9%, Jabil Inc (JBL) at 3.8%, Natera Inc (NTRA) at 3.1% and Wabtec (WAB) at 3.1%.

What did Pinnbrook Capital Management LP buy last quarter?

In Q2 2026, Pinnbrook Capital Management LP added a new position in Natera Inc (NTRA), a new position in Quanta Svcs Inc (PWR), a new position in Timken Co Com (TKR), a new position in Texas Instrs Inc (TXN), a new position in Aramark (ARMK), Csx Corp (CSX) (+1156.7% shares), Ati Inc (ATI) (+1089.6% shares) and Wabtec (WAB) (+760.0% shares), compared with its Q1 2026 filing.

What did Pinnbrook Capital Management LP sell last quarter?

In Q2 2026, Pinnbrook Capital Management LP cut from its top 50 Curtiss Wright Corp (CW), cut from its top 50 Slb Limited (SLB), cut from its top 50 Lam Research Corp (LRCX), cut from its top 50 Devon Energy Corp New (DVN), cut from its top 50 Merck & Co Inc (MRK) and MasTec Inc (MTZ) (-24.7% shares), compared with its Q1 2026 filing.

How has Pinnbrook Capital Management LP's portfolio performed?

A portfolio copying Pinnbrook Capital Management LP's 20 largest 13F holdings each quarter, from the day each filing was public, returned +18.3% a year over the last 3 years, against +20.4% for the S&P 500. Over 1 year: +10.3% against +20.1%. Over 5 years: +13.7% a year against +13.0%.

When is Pinnbrook Capital Management LP's next 13F filing due?

13F filings are due 45 days after each quarter ends. Pinnbrook Capital Management LP's filing for the quarter ending Sep 30, 2026 is due by Nov 14, 2026; this page updates the day after it is published.

How much money does Pinnbrook Capital Management LP manage?

Pinnbrook Capital Management LP reported $1.1B of regulatory assets under management on its latest SEC Form ADV. Its 13F, which covers only US-listed stocks and options, totals $601.0M.