Guy Spier - Aquamarine Capital

As of Q2 2026, Guy Spier reported 7 long-equity positions worth $144.09M in aggregate.

Copy-investor backtest

Latest quarter: +3.96%
1-year: +13.66%
3-year: +68.33%
5-year: +72.54%
3-year vs S&P 500: +0.40%
5-year vs S&P 500: +0.56%
5-year top 5: +65.63%

Return from mechanically copying the disclosed 13F equity portfolio after each filing and rebalancing at the next. The vs S&P 500 figures subtract SPY over that manager's own rebalance dates, so both sides cover the same days; both are price return, excluding dividends. Method & limitations.

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Filing period

Updated 2026-06-06 from SEC 13F data.

Live quotes available for 6 of 17 rows. Rows without a quote are marked unavailable.


1	FCAU	FIAT CHRYSLER AUTOMOBILES N	16.91%	-	2,000,000	$35.15M	No quote	No quote
2	BRK/B	BERKSHIRE HATHAWAY INC DELCUSIP 084670702	14.49%	-	140,600	$30.1M	No quote	No quote
3	RACE	FERRARI N V	13.25%	-	200,000	$27.53M	$137.63	No quote
4	AXP	AMERICAN EXPRESS CO	11.40%	Reduce -18.4%	222,430	$23.69M	$106.49	No quote
5	BAC	BANK AMER CORP	8.36%	-	590,000	$17.38M	$29.46	No quote
6	GMWSB	GENERAL MTRS CO	7.94%	-	1,000,000	$16.5M	No quote	No quote
7	MA	MASTERCARD INCORPORATED	7.04%	-	65,750	$14.64M	$222.62	No quote
8	SRG	SERITAGE GROWTH PPTYS	4.89%	Add +221.1%	213,869	$10.16M	No quote	No quote
9	BRK/A	BERKSHIRE HATHAWAY INC DELCUSIP 084670108	4.62%	-	30	$9.6M	No quote	No quote
10	WFC	WELLS FARGO CO NEW	2.91%	-	115,000	$6.04M	$52.56	No quote
11	BACWSA	BANK AMER CORP	2.74%	-	320,000	$5.7M	No quote	No quote
12	MCO	MOODYS CORP	2.01%	-	25,000	$4.18M	$167.20	No quote
13	TERP	TERRAFORM PWR INC	1.28%	-	231,183	$2.67M	No quote	No quote
14	TOO	TEEKAY OFFSHORE PARTNERS L P	1.13%	-	1,000,000	$2.34M	No quote	No quote
15	WFCWS	WELLS FARGO CO NEW	1.02%	-	110,000	$2.12M	No quote	No quote
17	PKX	POSCO	-	Sold	0	$0	No quote	No quote
16	C	CITIGROUP INC	-	Sold	0	$0	No quote	No quote