PEAK6 LLC

Market maker Mechanical CIK 1389958
League rank
#5
in Market maker · #547 overall
Long book
$3.46B
Q1 2026
Positions
808
Top-10 weight
38%
concentration
Last quarter
+20.6%
SPY +14.8%
Turnover
56%
of book per quarter

Strategy in plain words

auto-generated from filings

PEAK6 LLC is a market maker — positions are inventory, not bets, running a $3.46B US long book across 808 positions.

The portfolio is moderately concentrated (top 10 ≈ 38% of the book). Turnover is high — positions rotate quickly, so individual names matter less than the process. Current anchor positions: COREWEAVE INC-CL A, WEBULL CORP, SPDR GOLD SHARES, TAIWAN SEMICONDUCTOR-SP ADR, ETORO GROUP LTD-A.

Over the last 6 quarters its long book ran on average 3.2pp per quarter ahead of the S&P 500, beating the index in 4 of 6 quarters. Its holdings are mechanical (indexing / client flows), so position changes carry no stock-picking signal.

Implied long-book return vs S&P 500

methodology: positions priced quarterly, no shorts/options
Fund long book S&P 500
Q4 2024
-4.5%
Q1 2025
+24.6%
Q2 2025
+16.3%
Q3 2025
-6.6%
Q4 2025
-3.4%
Q1 2026
+20.6%

Sector allocation

Technology
43%
Financials
21%
Industrials
11%
Other
4%
Services media
4%
Materials
4%
Consumer discretionary
3%
Energy
3%

Long book by quarter

$2.55B
Q4 2024
$2.56B
Q1 2025
$5.55B
Q2 2025
$7.69B
Q3 2025
$7.32B
Q4 2025
$3.46B
Q1 2026

What does PEAK6 LLC own?

Q1 2026 13F
CompanySectorSharesValue% of bookChange
CRWV COREWEAVE INC-CL ATechnology6.8M$527.9M15.3%-41.2%
BULL WEBULL CORPFinancials30.1M$144.5M4.2%-35.8%
ETOR ETORO GROUP LTD-AFinancials3.4M$102.1M3.0%+94.9%
MU MICRON TECHNOLOGY INCTechnology182.5K$61.7M1.8%-70.5%
META META PLATFORMS INC-CLASS ATechnology88.4K$50.6M1.5%+2209000.0%
NVDA NVIDIA CORPTechnology289.8K$50.5M1.5%New
TSLA TESLA INCIndustrials120.3K$44.7M1.3%+115.6%
CVX CHEVRON CORPEnergy185.6K$38.4M1.1%New
PLTR PALANTIR TECHNOLOGIES INC-ATechnology244.2K$35.7M1.0%+67.8%
GS GOLDMAN SACHS GROUP INCFinancials41.6K$35.2M1.0%+30.4%
ORCL ORACLE CORPTechnology230.5K$33.9M1.0%-56.6%
INTC INTEL CORPTechnology719.8K$31.8M0.9%New
CRWD CROWDSTRIKE HOLDINGS INC - ATechnology79.4K$31.0M0.9%+1322750.0%
UNH UNITEDHEALTH GROUP INCFinancials111.7K$30.2M0.9%-35.5%
COIN COINBASE GLOBAL INC -CLASS AFinancials157.3K$27.5M0.8%-78.3%
PWR QUANTA SERVICES INCIndustrials49.9K$27.4M0.8%-11.3%
AG FIRST MAJESTIC SILVER CORPMaterials1.2M$26.2M0.8%-51.8%
FSLR FIRST SOLAR INCTechnology100.5K$19.8M0.6%+1675683.3%
TPR TAPESTRY INCOther137.7K$19.4M0.6%-71.9%
AEM AGNICO EAGLE MINES LTDMaterials91.3K$18.5M0.5%+26.1%
MATW MATTHEWS INTL CORP-CLASS AIndustrials712.1K$18.4M0.5%+242.0%
MDB MONGODB INCTechnology73.4K$18.0M0.5%+1834700.0%
VAL VALARIS LTDEnergy182.4K$17.9M0.5%-15.4%
STXN SEAGATE TECHNOLOGY HOLDINGS45.5K$17.8M0.5%-51.1%
NEM NEWMONT CORPMaterials151.7K$16.4M0.5%-70.5%
SPOT SPOTIFY TECHNOLOGY SACommunications33.7K$16.3M0.5%+841475.0%
OWL BLUE OWL CAPITAL INCFinancials1.8M$16.2M0.5%+113.4%
KLAC KLA CORPOther11.0K$16.2M0.5%+207.3%
ADBE ADOBE INCTechnology64.9K$15.8M0.5%-17.7%
AMD ADVANCED MICRO DEVICESTechnology75.6K$15.4M0.4%+1260333.3%
PANW PALO ALTO NETWORKS INCTechnology95.3K$15.3M0.4%-40.2%
MUSA MURPHY USA INCConsumer discretionary29.3K$14.5M0.4%+22.8%
ZM ZOOM COMMUNICATIONS INCTechnology175.2K$14.1M0.4%New
SNDK SANDISK CORPTechnology21.6K$13.7M0.4%+538675.0%
TEM TEMPUS AI INC-CL ATechnology294.7K$13.3M0.4%+13.6%
WDC WESTERN DIGITAL CORPTechnology48.1K$13.0M0.4%New
AFRM AFFIRM HOLDINGS INCFinancials277.5K$12.7M0.4%New
MBVI M3-BRIGADE ACQUISITION-CL AFinancials1.3M$12.6M0.4%-50.0%
HLT HILTON WORLDWIDE HOLDINGS INServices media40.9K$12.4M0.4%-77.5%
TFC TRUIST FINANCIAL CORPFinancials257.0K$11.8M0.3%New
PATH UIPATH INC - CLASS ATechnology1.1M$11.7M0.3%+214.7%
LRCX LAM RESEARCH CORPIndustrials52.5K$11.2M0.3%-70.8%
NKE NIKE INC -CL BOther209.1K$11.0M0.3%-57.1%
VPG VISHAY PRECISION GROUPTechnology250.8K$10.9M0.3%-71.9%
COST COSTCO WHOLESALE CORPConsumer discretionary10.7K$10.6M0.3%+177583.3%
AAL AMERICAN AIRLINES GROUP INCIndustrials983.4K$10.6M0.3%-4.4%
QCOM QUALCOMM INCTechnology80.0K$10.3M0.3%0.0%
CMI CUMMINS INCIndustrials19.1K$10.3M0.3%+58.0%
MP MP MATERIALS CORPMaterials210.2K$10.1M0.3%+4489.3%
SMCI SUPER MICRO COMPUTER INCTechnology431.7K$9.8M0.3%-78.7%

13F filing history

PeriodFormFiledEntriesReported valueFlagsSource
Q1 202613F-HRMay 14, 20262703$42.61B canonicalSEC ↗
Q4 202513F-HR/ANEW HOLDINGSMar 12, 20262827$53.76B canonicalSEC ↗
Q4 202513F-HRFeb 13, 20262826$53.76B canonicalSEC ↗
Q3 202513F-HR/ANEW HOLDINGSMar 31, 20262953$68.28B canonicalSEC ↗
Q3 202513F-HRNov 14, 20252952$68.26B canonicalSEC ↗
Q2 202513F-HR/ANEW HOLDINGSMar 26, 20262970$54.07B canonicalSEC ↗
Q2 202513F-HR/ARESTATEMENTNov 13, 20252968$53.74B canonicalSEC ↗
Q2 202513F-HRAug 14, 20252969$54.06B SEC ↗
Q1 202513F-HRMay 14, 20252983$44.56B canonicalSEC ↗
Q4 202413F-HRFeb 13, 20253099$47.64B canonicalSEC ↗
Q3 202413F-NTNov 14, 2024$0 SEC ↗
Q2 202413F-NTAug 14, 2024$0 SEC ↗
Q1 202413F-NTMay 14, 2024$0 SEC ↗