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Game Creek Capital, LP — 13F Holdings & Portfolio

CIK 1731132 · latest 13F-HR filed 2026-08-13

Backtest portfolio

Game Creek Capital, LP manages $283.3M in 13F-reported U.S. long-equity assets across 77 reported positions as of its 2026-06-30 13F-HR filing. Its largest disclosed positions are MU (8.22%), GOOGL (5.37%), SPY (5.27%). Quarter over quarter (versus its 2026-03-31 filing) the fund opened 4 new positions and exited 16; 15 existing positions rose in reported value and 38 fell.

AUM is the long-equity portion reported on Form 13F-HR. Excludes short positions, cash, foreign holdings, and non-13F assets. For informational purposes only — not investment advice.

Loading holdings…
AUM
$283.3M

Long-equity book

Holdings
77

Distinct positions

Period
2026-06-30

Filed 2026-08-13

Q/Q Activity
+4 / −16 / ↑15 / ↓38

vs 2026-03-31

Portfolio charts

Latest quarter's book, what changed, and how the portfolio has evolved across filings.

Portfolio map

Q2 26
MU10.1% · -41%GOOGL6.6% · -14%AMZN4.8% · -15%AMD4.1% · -29%GNRC3.7% · -7%VRT3.7% · -39%UBER3.6% · +13%CVX3.5% · -18%MDT3.4% · +8%LLY2.6% · -24%XPO2.6% · -2%NOW2.6% · -10%HPE2.3% · -38%LHX2.1% · -17%XYZ2.1% · +18%DAL2.1% · -32%BAC2.0% · -17%MOD1.9% · +3%ACN1.7% · +44%SFD1.6% · -23%CACI1.5% · +58%CSCO1.5% · -26%JHX1.5% · -4%B1.4% · -29%WMT1.4% · 0%LUV1.4% · -25%MSFT1.3% · -16%MMED1.2% · +784%IBM1.2% · -26%JPM1.0% · -9%BJ1.0% · 0%GM0.9% · -36%EAT0.9% · -35%PINS0.9% · newPFE0.9% · -39%STNG0.8% · -15%HD0.8% · newPOOL0.7% · newCCJ0.7% · -12%REGN0.7% · -51%NEM0.7% · -34%TOL0.7% · +100%PSQ0.7% · -76%GLD0.6% · -19%KR0.6% · -41%OPCH0.6% · +44%EQT0.6% · -48%C0.6% · -56%SHEL0.5% · -32%AJG0.5% · -9%GOOG0.5% · -63%AEM0.4% · -41%BSX0.4% · newNVDA0.4% · -75%VZ0.4% · -62%TMUS0.4% · 0%BAH0.3% · -83%MP0.3% · +56%WTW0.3% · -20%SNPS0.3% · -24%

Box size = position value; colour = change in share count vs the prior quarter (green added, red trimmed, blue new). Rows split across managers or share classes are combined. Click a box for the stock.

Sector mix

% of 13F value

Sectors from each company's SIC code; funds and ETFs grouped separately.

Biggest buys and sells

Q1 26 → Q2 26

Estimated from the change in shares held × the quarter-end price, so price moves alone don't count as buying. New and exited positions are included.

13F assets and positions

4 quarters

Total reported 13F value (bars) and number of positions (line) each quarter. Value changes include market moves.

Top positions over time

reported value

The eight largest current positions, valued at each quarter end.

Concentration

top 10 = 46.1%

Cumulative share of the portfolio held in the largest N positions.

Firm Profile & Key People

As of the firm’s regulatory filing dated Apr 1, 2026.

Assets Under Management
$329.0M
Discretionary
$329.0M
Employees
10
Accounts
14
Address
30 ROWES WHARF
SUITE 540
BOSTON, MA 02110
Phone
(617) 849-6589
Website
Name Title / Status Ownership Type
GCC GP LLC ControlGENERAL PARTNER
since Aug 2008
Less than 5%Domestic Entity
LEDDY, DENNIS, PATRICK ControlCHIEF COMPLIANCE OFFICER AND CHIEF OPERATING OFFICER
since Apr 2011
Less than 5%Individual
MURPHY, SEAN, PATRICK ControlMANAGING PARTNER, CHIEF EXECUTIVE OFFICER AND PRESIDENT
since Aug 2008
75% or moreIndividual
MAYO, RICHARD, ARTHURPARTNER
since Aug 2008
10–25%Individual
MURPHY, SEAN, PATRICK Control
Indirect owner via GCC GP LLC
MANAGER
since Jun 2014
75% or moreIndividual
MAYO, RICHARD, ARTHUR
Indirect owner via GCC GP LLC
MANAGER
since Jun 2014
General partner, trustee or managerIndividual
Ownership & leadership changes · 7 filings with changes since Mar 21, 2012

From the firm’s regulatory filings, newest first. Dates are filing dates: a filing that no longer lists someone does not say when they left.

Oct 20, 2017 filing
  • No longer listedMAYO, RICHARD, ARTHUR · MANAGER · General partner, trustee or manager · indirect via GAME CREEK CAPITAL GP, LLC · listed since Aug 2008
  • No longer listedMURPHY, SEAN, PATRICK · MANAGER · 75% or more · indirect via GAME CREEK CAPITAL GP, LLC · control person · listed since Aug 2008
  • AddedMAYO, RICHARD, ARTHUR · MANAGER · General partner, trustee or manager · indirect via GCC GP LLC
  • AddedMURPHY, SEAN, PATRICK · MANAGER · 75% or more · indirect via GCC GP LLC · control person
Sep 29, 2017 filing
  • No longer listedGAME CREEK CAPITAL GP, LLC · GENERAL PARTNER · Less than 5% · control person · listed since Aug 2008
  • AddedGCC GP LLC · GENERAL PARTNER · Less than 5% · control person
Oct 4, 2016 filing
  • No longer listedTIMMINS, PAUL, JOSEPH · CHIEF COMPLIANCE OFFICER & CHIEF FINANCIAL OFFICER · Less than 5% · control person · listed since Jan 2014
  • ChangedLEDDY, DENNIS, PATRICK · title CHIEF OPERATING OFFICER → CHIEF COMPLIANCE OFFICER AND CHIEF OPERATING OFFICER
Mar 31, 2015 filing
  • ChangedMAYO, RICHARD, ARTHUR · indirect via GAME CREEK CAPITAL GP, LLC: ownership 50–75% → General partner, trustee or manager
  • ChangedMURPHY, SEAN, PATRICK · indirect via GAME CREEK CAPITAL GP, LLC: ownership 50–75% → 75% or more
Mar 27, 2014 filing
  • ChangedMAYO, RICHARD, ARTHUR · ownership 50–75% → 10–25%; no longer a control person
  • ChangedMAYO, RICHARD, ARTHUR · indirect via GAME CREEK CAPITAL GP, LLC: title MEMBER → MANAGER
  • ChangedMURPHY, SEAN, PATRICK · ownership 50–75% → 75% or more
  • ChangedMURPHY, SEAN, PATRICK · indirect via GAME CREEK CAPITAL GP, LLC: title MANAGING MEMBER → MANAGER
Jan 16, 2014 filing
  • AddedTIMMINS, PAUL, JOSEPH · CHIEF COMPLIANCE OFFICER & CHIEF FINANCIAL OFFICER · Less than 5% · control person
  • ChangedLEDDY, DENNIS, PATRICK · title CHIEF COMPLIANCE OFFICER & CHIEF OPERATING OFFICER → CHIEF OPERATING OFFICER
Apr 1, 2013 filing
  • ChangedMAYO, RICHARD, ARTHUR · now a control person
Mar 21, 2012 filing (earliest on record)
  • ListedGAME CREEK CAPITAL GP, LLC · GENERAL PARTNER · Less than 5% · control person
  • ListedLEDDY, DENNIS, PATRICK · CHIEF COMPLIANCE OFFICER & CHIEF OPERATING OFFICER · Less than 5% · control person
  • ListedMAYO, RICHARD, ARTHUR · PARTNER · 50–75%
  • ListedMAYO, RICHARD, ARTHUR · MEMBER · 50–75% · indirect via GAME CREEK CAPITAL GP, LLC
  • ListedMURPHY, SEAN, PATRICK · MANAGING PARTNER, CHIEF EXECUTIVE OFFICER AND PRESIDENT · 50–75% · control person
  • ListedMURPHY, SEAN, PATRICK · MANAGING MEMBER · 50–75% · indirect via GAME CREEK CAPITAL GP, LLC · control person

Quarter-over-quarter changes

Changes in reported position value vs the prior 13F, so price moves count too, not just shares bought or sold.

Game Creek Capital, LP Holdings (2026-06-30)

Rows tagged Call or Put are options positions, not stock. Per SEC Form 13F-HR, Value shows the notional value of the underlying (shares covered × underlying price), not the option premium. Shares is the number of underlying shares covered (divide by 100 for contract count).

# Issuer Symbol CUSIP Value Weight Shares Type
1 MICRON TECHNOLOGY INC MU 595112103 $23.3M 8.22% 20,176 SH
2 ALPHABET INC GOOGL 02079K305 $15.2M 5.37% 42,575 SH
3 STATE STR SPDR S&P 500 ETF T Put SPY 78462F103 $14.9M 5.27% 20,000 SH
4 AMAZON COM INC AMZN 023135106 $11.1M 3.90% 46,400 SH
5 ADVANCED MICRO DEVICES INC AMD 007903107 $9.5M 3.35% 16,315 SH
6 GENERAC HLDGS INC GNRC 368736104 $8.6M 3.05% 29,500 SH
7 VERTIV HOLDINGS CO VRT 92537N108 $8.6M 3.04% 25,725 SH
8 UBER TECHNOLOGIES INC UBER 90353T100 $8.2M 2.90% 113,975 SH
9 CHEVRON CORPORATION CVX 166764100 $8.1M 2.88% 49,143 SH
10 MEDTRONIC PLC MDT G5960L103 $8.0M 2.81% 101,750 SH
11 INVESCO QQQ TR Put QQQ 46090E103 $7.4M 2.60% 10,000 SH
12 ALPHABET INC Put GOOGL 02079K305 $6.4M 2.27% 18,000 SH
13 ELI LILLY & CO LLY 532457108 $6.1M 2.15% 5,070 SH
14 XPO INC XPO 983793100 $6.0M 2.11% 29,100 SH
15 SERVICENOW INC NOW 81762P102 $6.0M 2.10% 60,000 SH
16 HEWLETT PACKARD ENTERPRISE C HPE 42824C109 $5.4M 1.90% 119,375 SH
17 L3HARRIS TECHNOLOGIES INC LHX 502431109 $5.0M 1.75% 17,040 SH
18 BLOCK INC XYZ 852234103 $4.9M 1.74% 65,000 SH
19 VERTIV HOLDINGS CO Put VRT 92537N108 $4.9M 1.71% 14,500 SH
20 DELTA AIR LINES INC DAL 247361702 $4.8M 1.71% 51,625 SH
21 MICRON TECHNOLOGY INC Put MU 595112103 $4.6M 1.63% 4,000 SH
22 BANK OF AMER CORP BAC 060505104 $4.6M 1.62% 80,375 SH
23 MODINE MFG CO MOD 607828100 $4.4M 1.56% 16,500 SH
24 ADVANCED MICRO DEVICES INC Put AMD 007903107 $4.1M 1.44% 7,000 SH
25 ACCENTURE PLC IRELAND ACN G1151C101 $3.9M 1.37% 31,125 SH
26 SMITHFIELD FOODS INC SFD 832248207 $3.7M 1.31% 153,000 SH
27 CACI INTL INC CACI 127190304 $3.5M 1.23% 7,500 SH
28 CISCO SYS INC CSCO 17275R102 $3.4M 1.21% 29,075 SH
29 JAMES HARDIE INDS PLC JHX G4253H101 $3.4M 1.20% 130,000 SH
30 BARRICK MNG CORP B 06849F108 $3.3M 1.18% 91,000 SH
31 WALMART INC WMT 931142103 $3.3M 1.15% 28,725 SH
32 SOUTHWEST AIRLS CO LUV 844741108 $3.2M 1.12% 61,925 SH
33 AMAZON COM INC Put AMZN 023135106 $3.0M 1.05% 12,500 SH
34 MICROSOFT CORP MSFT 594918104 $2.9M 1.04% 7,875 SH
35 MINIMED GROUP INC MMED 60365F109 $2.9M 1.01% 192,250 SH
36 WALMART INC Put WMT 931142103 $2.8M 1.00% 25,000 SH
37 INTERNATIONAL BUSINESS MACHS IBM 459200101 $2.8M 0.99% 10,015 SH
38 GENERAL MTRS CO Put GM 37045V100 $2.3M 0.82% 30,000 SH
39 JPMORGAN CHASE & CO JPM 46625H100 $2.3M 0.81% 7,025 SH
40 BJS WHSL CLUB HLDGS INC BJ 05550J101 $2.3M 0.80% 26,000 SH
41 GENERAL MTRS CO GM 37045V100 $2.2M 0.77% 28,475 SH
42 BRINKER INTL INC EAT 109641100 $2.2M 0.77% 13,000 SH
43 PINTEREST INC PINS 72352L106 $2.0M 0.71% 95,000 SH
44 PFIZER INC PFE 717081103 $2.0M 0.70% 82,500 SH
45 SCORPIO TANKERS INC STNG Y7542C130 $2.0M 0.69% 28,275 SH
46 HOME DEPOT INC HD 437076102 $1.8M 0.62% 5,000 SH
47 POOL CORP POOL 73278L105 $1.7M 0.61% 8,000 SH
48 CAMECO CORP CCJ 13321L108 $1.7M 0.60% 16,700 SH
49 REGENERON PHARMACEUTICALS REGN 75886F107 $1.7M 0.60% 2,725 SH
50 NEWMONT CORP NEM 651639106 $1.7M 0.60% 18,125 SH
Filing History
Period Filed AUM Holdings Accession
2026-06-30 2026-08-13 $283.3M 77 0001172661-26-003398
2026-03-31 2026-05-14 $300.7M 93 0001172661-26-001951
2025-12-31 2026-02-17 $302.7M 92 0001172661-26-001046
2025-09-30 2025-11-13 $285.8M 93 0001172661-25-004760
Filer Information
Address
30 ROWES WHARF
SUITE 540
BOSTON, MA 02110
Phone
(617) 849-6589
Filing Manager
Game Creek Capital, LP
BOSTON, MA
Signatory
Dennis P. Leddy
Chief Compliance Officer and Chief Operating Officer