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Funds (13F)

Ruane, Cunniff & Goldfarb L.P.

Backtest from 18 May 2018 to 2 Nov 2026 · weekly · hypothetical

Watch this strategy
Return a year
+12.8%
S&P 500 +14.6%
Last 12 months
+13.4%
S&P 500 +12.1%
Sharpe ratio
0.52
S&P 500 0.69
Biggest drop
−39.3%
S&P 500 −31.8%
$10.0k$20.0k 201820192020202120222023202420252026 $31.7k$27.7k
StrategyS&P 500 $10,000 in Ruane, Cunniff & Goldfarb L.P. from 18 May 2018 against the S&P 500 (total return) over the same dates, marked weekly, log scale. Hypothetical: before taxes and trading costs.

About

Copies Ruane, Cunniff & Goldfarb L.P.'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.

Ruane, Cunniff & Goldfarb L.P.'s 13F holdings →

Key statistics

MeasureStrategyS&P 500
Return a year (compound)+12.8%+14.6%
Total return+177%+217%
Last 12 months+13.4%+12.1%
Last 3 months+2.7%—
Last month+3.0%—
This year so far+7.8%—
Volatility a year22.7%17.9%
Sharpe ratio0.520.69
Biggest drop−39.3%−31.8%
Beta to the S&P 5001.141.00
Alpha a year (t-statistic)−2.4% (−0.69)—
Share of weeks up56%—

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
GOOGL12.3%——
TSM9.7%——
FWONK8.6%——
SCHW7.3%——
COF6.8%——
ELV6.5%——
ICLR6.1%——
SUNB5.5%——
ICE5.4%——
MSA5.2%——
UNH5.1%——
TECH4.1%——
ROP3.9%——
ALGN3.4%——
SAP3.3%——
ZTS2.9%——
ACN1.9%——
META1.5%——
AMTM0.2%——
CACC0.1%——
MU0.0%——
EQH0.0%——
GPI0.0%——
LAD0.0%——
J0.0%——
GLIBA0.0%——
NFLX0.0%——
GMED0.0%——
SDHC0.0%——
AXP0.0%——
AAPL0.0%——
MSFT0.0%——
SBGI0.0%——
DG0.0%——
FERG0.0%——
CHTR0.0%——
HGV0.0%——
SPGI0.0%——
BAC0.0%——
STLA0.0%——
RMNI0.0%——

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

PeriodReturn a yearS&P 500SharpeS&P 500Biggest dropBetaAlpha (t)
Whole backtest18 May 2018 to 2 Nov 2026+12.8%+14.6%0.520.69−39.3%1.14−2.4% (−0.69)
Last three years3 Nov 2023 to 2 Nov 2026+18.8%+21.8%0.931.16−15.4%0.88−0.4% (−0.09)
Last year7 Nov 2025 to 2 Nov 2026+15.3%+14.2%0.780.84−15.4%0.97+1.6% (0.18)
DateCompanyAction
21 Aug 2026ROPBought
21 Aug 2026HGVBought
21 Aug 2026BACBought
22 May 2026ZTSBought
22 May 2026SUNBBought
22 May 2026GMEDBought
20 Feb 2026ALGNBought
20 Feb 2026ACNBought
21 Nov 2025SDHCBought
21 Nov 2025SAPBought
21 Nov 2025GLIBABought
21 Nov 2025BLKBought
21 Nov 2025AAPLBought
15 Aug 2025TECHBought
15 Aug 2025RSGBought
15 Aug 2025MUBought
15 Aug 2025MSABought
15 Aug 2025FERGBought
15 Aug 2025DGBought
21 Feb 2025ICLRBought
21 Feb 2025AAPLBought
15 Nov 2024UNHBought
15 Nov 2024TSMBought
15 Nov 2024STLABought
15 Nov 2024SPGIBought

Dated at the rebalance that made the change.

DateCompanyAction
20 Feb 2026KMXSold
20 Feb 2026BLKSold
21 Nov 2025RSGSold
21 Nov 2025EXPDSold
15 Aug 2025BLDRSold
16 May 2025AAPLSold
21 Feb 2025MUSold

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