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Funds (13F)

Magnetar Financial LLC

Backtest from 21 Feb 2014 to 2 Nov 2026 · weekly · hypothetical

Watch this strategy
Return a year
+3.2%
S&P 500 +13.7%
Last 12 months
−52.2%
S&P 500 +12.1%
Sharpe ratio
0.19
S&P 500 0.75
Biggest drop
−62.0%
S&P 500 −31.8%
$10.0k$20.0k$40.0k 2014201620182020202220242026 $50.9k$14.9k
Magnetar Financial LLCS&P 500 $10,000 in Magnetar Financial LLC from 21 Feb 2014 against the S&P 500 (total return) over the same dates, marked weekly, log scale. Hypothetical: before taxes and trading costs.

About

Copies Magnetar Financial LLC's quarterly 13F holdings in the companies we cover, weighted by reported value: it buys on the first trading day after each 13F is filed (up to 45 days after the quarter) and holds until the next filing. A 13F shows long US-listed positions only, at the quarter's end, so this misses shorts, cash, bonds, non-US holdings and trading within the quarter.

Magnetar Financial LLC's 13F holdings →

Key statistics

MeasureStrategyS&P 500
Return a year (compound)+3.2%+13.7%
Total return+49%+409%
Last 12 months−52.2%+12.1%
Last 3 months−21.5%—
Last month−33.2%—
This year so far−20.6%—
Volatility a year32.1%16.2%
Sharpe ratio0.190.75
Biggest drop−62.0%−31.8%
Beta to the S&P 5000.861.00
Alpha a year (t-statistic)−4.2% (−0.51)—
Share of weeks up41%—

Sharpe ratio uses returns above the 3-month Treasury bill rate. Alpha is the yearly return left after allowing for the strategy's exposure to the S&P 500 (CAPM); a t-statistic below about 2 means it cannot be told apart from luck.

Insights

CompanyWeightHeld sinceReturn since
CRWV75.0%——
KVUE1.3%——
NSC1.3%——
D1.2%——
TXNM1.2%——
PEN1.2%——
ROKU1.0%——
SLAB0.8%——
TECH0.8%——
CZR0.8%——
RAMP0.8%——
PAYO0.7%——
AAUC0.7%——
WTRG0.7%——
UNF0.7%——
OGN0.6%——
VAL0.5%——
CCXI0.5%——
IMXI0.4%——
AXTA0.4%——
RPT0.3%——
LPBB0.3%——
VECO0.3%——
SYNA0.3%——
SPCX0.3%——
ZIM0.2%——
NTWO0.2%——
IRHO0.2%——
NWE0.2%——
BRUN0.2%——
FACT0.2%——
SVAQ0.1%——
BIII0.1%——
IPXG0.1%——
IRDM0.1%——
DAAQ0.1%——
IHS0.1%——
GSAT0.1%——
NATH0.1%——
SVIA0.1%——
BEAG0.1%——
NKLR0.1%——
MFC0.1%——
F0.1%——
MKLY0.0%——
SSAC0.0%——
KEYS0.0%——
YUMC0.0%——
ARW0.0%——
SNPS0.0%——
ITRN0.0%——
SSNC0.0%——
AIG0.0%——
HIG0.0%——
DLB0.0%——
CMG0.0%——
MDT0.0%——
ALSN0.0%——
SF0.0%——
DSGX0.0%——
CMCSA0.0%——
IDT0.0%——
MSFT0.0%——
LLY0.0%——
KEX0.0%——
FIVE0.0%——
PAAS0.0%——
CRM0.0%——
MCGA0.0%——
AME0.0%——
CVCO0.0%——
RAL0.0%——
BR0.0%——
WLY0.0%——
ALRM0.0%——
CNM0.0%——
NDSN0.0%——
FUL0.0%——
CPRT0.0%——
SJM0.0%——
GILD0.0%——
MLI0.0%——
LFUS0.0%——
ALGN0.0%——
FHN0.0%——
ADI0.0%——
B0.0%——
INGM0.0%——
ICE0.0%——
AWI0.0%——
DT0.0%——
TMUS0.0%——
AVT0.0%——
ARQT0.0%——
SOLS0.0%——
HBAN0.0%——
RGA0.0%——
NOMD0.0%——
TJX0.0%——
NOC0.0%——
GPI0.0%——
BRX0.0%——
MDB0.0%——
HST0.0%——
SPSC0.0%——
UHS0.0%——
ANDE0.0%——
GIII0.0%——
FIS0.0%——
AFG0.0%——
FWONK0.0%——
ROL0.0%——
JBL0.0%——
STN0.0%——
ROST0.0%——
TD0.0%——
KMT0.0%——
BAH0.0%——
A0.0%——
WWD0.0%——
FDX0.0%——
MDU0.0%——
AGI0.0%——
TFII0.0%——
CNQ0.0%——
CVX0.0%——
GGG0.0%——
WCC0.0%——
HII0.0%——
CUBE0.0%——
EL0.0%——
WLK0.0%——
CHDN0.0%——
CNC0.0%——
PLD0.0%——
PHM0.0%——
FR0.0%——
BANF0.0%——
LYB0.0%——
AS0.0%——
MANH0.0%——
CSW0.0%——
VSXY0.0%——
GMED0.0%——
ATI0.0%——
UVSP0.0%——
CRUS0.0%——
ACM0.0%——
CLBT0.0%——
KMX0.0%——

Weighted by reported value in the latest 13F, held until the next filing.

PeriodReturn a yearS&P 500SharpeS&P 500Biggest dropBetaAlpha (t)
Whole backtest21 Feb 2014 to 2 Nov 2026+3.2%+13.7%0.190.75−62.0%0.86−4.2% (−0.51)
2018 onwards5 Jan 2018 to 2 Nov 2026−1.5%+13.9%0.070.66−62.0%0.95−8.5% (−0.75)
Last three years3 Nov 2023 to 2 Nov 2026−5.3%+21.8%0.101.16−62.0%1.23−14.3% (−0.46)
Last year7 Nov 2025 to 2 Nov 2026−40.1%+14.2%−0.440.84−45.9%2.69−57.3% (−0.92)
DateCompanyAction
21 Aug 2026ZYMEBought
21 Aug 2026ZMBought
21 Aug 2026YETIBought
21 Aug 2026XPEVBought
21 Aug 2026XENEBought
21 Aug 2026WWDBought
21 Aug 2026WUBought
21 Aug 2026WMKBought
21 Aug 2026WMGBought
21 Aug 2026WLKBought
21 Aug 2026WFRDBought
21 Aug 2026WESTBought
21 Aug 2026WEAVBought
21 Aug 2026WCCBought
21 Aug 2026WATBought
21 Aug 2026WALBought
21 Aug 2026WABBought
21 Aug 2026VSTSBought
21 Aug 2026VRSNBought
21 Aug 2026VNOMBought
21 Aug 2026VMDBought
21 Aug 2026VKTXBought
21 Aug 2026VIPSBought
21 Aug 2026VICRBought
21 Aug 2026VIAVBought

Dated at the rebalance that made the change.

DateCompanyAction
21 Aug 2026ZETASold
21 Aug 2026ZBRASold
21 Aug 2026XRAYSold
21 Aug 2026XMTRSold
21 Aug 2026WTSSold
21 Aug 2026WLTHSold
21 Aug 2026WKCSold
21 Aug 2026WIXSold
21 Aug 2026WFGSold
21 Aug 2026WENSold
21 Aug 2026WDSold
21 Aug 2026WCNSold
21 Aug 2026WASHSold
21 Aug 2026VSECSold
21 Aug 2026VRTXSold
21 Aug 2026VMISold
21 Aug 2026VISNSold
21 Aug 2026VEEVSold
21 Aug 2026UVESold
21 Aug 2026UUUUSold
21 Aug 2026UTZSold
21 Aug 2026UNMSold
21 Aug 2026UGPSold
21 Aug 2026UECSold
21 Aug 2026UALSold

Dated at the rebalance that made the change.

Backtests are hypothetical and use today's listed companies only, which flatters results. Past performance does not predict future returns. This is research, not investment advice. How we backtest