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Rye Brook Capital LLC

CIK:0001844147
Investment Adviser
$279M AUM
31 holdings
Greenwich, CT, United States
Founded:2021
1 employees
Latest filing:Sep 30, 2025

Rye Brook Capital LLC is a United States-based SEC-registered investment adviser headquartered in Greenwich, Connecticut. Founded in 2021, the firm manages assets for institutional and high-net-worth individuals and is led by Carlos Gustavo Ribeiro Fernandes. Rye Brook Capital specializes in investment management and advisory services, operating with a lean team structure, and is primarily focused on US public equities and ETFs, as evidenced by their SEC filings and disclosed portfolio holdings.

Investment Strategy

Rye Brook Capital LLC's investment strategy centers on actively managed public equity portfolios, with a particular emphasis on US-listed ETFs and stocks. The firm’s filings indicate a dynamic, tactical approach, frequently adjusting holdings in major ETFs such as QQQ, SMH, KWEB, XLI, and significant positions in sector-specific funds and niche opportunities like Sprott Physical Uranium Trust and Grayscale Ethereum Trust. The strategy entails sector rotation, concentrated positions in high-conviction securities, and periodic rebalancing to capture market opportunities and manage risk for institutional clients.

Top Buys
K
KWEBKRANESHARES CSI CHINA INTERN
+$7.2M
Q
QQQINVESCO QQQ TRUST SERIES 1
+$2.0M
S
SMHVANECK SEMICONDUCTOR ETF
+$1.9M
N
NXENEXGEN ENERGY LTD
+$1.6M
I
IBITISHARES BITCOIN TRUST ETF
+$1.4M
Top Sells
F
FCPTFOUR CORNERS PROPERTY TRUST
-$295.0K
B
BLMNBLOOMIN' BRANDS INC
-$260.0K
E
ETHEGRAYSCALE ETHEREUM TRUST ETF
-$247.0K
A
AMDADVANCED MICRO DEVICES
-$167.0K
V
VALVALARIS LTD
+$60.0K

Top Holdings

Q
QQQINVESCO QQQ TRUST SERIES 1
+14.1%$27.1M
S
SMHVANECK SEMICONDUCTOR ETF
+6.1%$11.7M
K
KWEBKRANESHARES CSI CHINA INTERN
+3.7%$7.2M
N
NXENEXGEN ENERGY LTD
+3.6%$6.9M
X
XLIINDUSTRIAL SELECT SECT SPDR
+3.3%$6.3M

Equity Positions (28)

TickerSecurityWeightMarket ValueSharesAvg CostPriceChange (QoQ)
Q
QQQ
INVESCO QQQ TRUST SERIES 114.08%$27.1M45,105$455.82$600.37+$2.0M
S
SMH
VANECK SEMICONDUCTOR ETF6.10%$11.7M35,925$203.13$326.36+$1.9M
K
KWEB
KRANESHARES CSI CHINA INTERN3.74%$7.2M171,200$42.01$42.01+$7.2M
N
NXE
NEXGEN ENERGY LTD3.60%$6.9M773,900$6.64$8.95+$1.6M
X
XLI
INDUSTRIAL SELECT SECT SPDR3.27%$6.3M40,715$133.16$154.23+$349.0K

Options Positions (1)

TickerSecurityActionTypeNotional ValueContractsUnderlying PricePremium PaidChange (Contracts)Change (Value)
S
SPY
SPDR S&P 500 ETF TRUSTNew
Put
$73.5M1,104$666.18$666.18+1,104+$73.5M

Industry Allocation

COMMODITY CONTRACTS BROKERS & DEALERS
+4.4%
MISCELLANEOUS METAL ORES
+3.6%
FINANCE SERVICES
+2.6%
SEMICONDUCTORS & RELATED DEVICES
+2.4%
LAND SUBDIVIDERS & DEVELOPERS (NO CEMETERIES)
+1.6%