Guy Spier

Aquamarine Capital

Guy Spier is a Zurich-based investor known for his value investing approach and author of 'The Education of a Value Investor.' His career reflects a commitment to disciplined investment strategies, emphasizing the importance of understanding intrinsic value and maintaining a long-term perspective in the markets. Spier's insights into investment psychology and decision-making have made him a notable figure in the investment community. As the head of Aquamarine Capital, Spier employs a value-oriented strategy that focuses on identifying undervalued assets with strong potential for appreciation. The firm has gained recognition for its methodical approach to investing, which aligns with Spier's personal philosophy of rigorous analysis and patience. Aquamarine Capital's investment decisions are informed by a thorough understanding of market dynamics and a commitment to ethical investing practices. The disclosed trading record for Guy Spier and Aquamarine Capital reveals a pattern of position reductions, exits, and increases over the period from August 13, 2020, to August 2, 2022. With a total of 117 disclosures, the firm has made 65 increases, 45 reductions, and 3 exits, indicating a strategic approach to portfolio management. Reported amounts range from $38.4K to $23.9K, reflecting a careful calibration of investment positions in response to market conditions.

History Trades

CompanyValueActionChangePriceCurrent Price
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$50k140.6k sharesAddQ1 2022 13F$7.6k$0.3529--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$39k210k sharesAddQ1 2022 13F$4.9k$0.187--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$18k80k sharesTrimQ1 2022 13F$3.1k$0.2199--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$16k200k sharesTrimQ1 2022 13F$3.1k$0.0779--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$32k767.8k sharesTrimQ1 2022 13F$2.5k$0.0412--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$16k30 sharesAddQ1 2022 13F$2.3k$528.93--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$9.1k27k sharesTrimQ1 2022 13F$1.4k$0.3374--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$3.6k11.5k sharesTrimQ1 2022 13F$514$0.312--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$5.2k47.5k sharesTrimQ1 2022 13F$475$0.1088--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$6.3k500k sharesTrimQ1 2022 13F$305$0.0127--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$1.2k30k sharesTrimQ1 2022 13F$136$0.0387--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$23k65.8k sharesTrimQ1 2022 13F$127$0.3574--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$2.2k800 sharesTrimQ1 2022 13F$93$2.78--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$19k200k sharesAddQ4 2021 13F$4.4k$0.0932--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$21k80k sharesAddQ4 2021 13F$3.9k$0.2587--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$42k140.6k sharesAddQ4 2021 13F$3.7k$0.299--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$34k767.8k sharesAddQ4 2021 13F$1.6k$0.0445--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$5.6k47.5k sharesTrimQ4 2021 13F$1.4k$0.1188--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$14k30 sharesAddQ4 2021 13F$1.2k$450.67--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$11k27k sharesAddQ4 2021 13F$958$0.3906--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$34k210k sharesTrimQ4 2021 13F$825$0.1636--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$6.6k500k sharesTrimQ4 2021 13F$780$0.0133--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$24k65.8k sharesAddQ4 2021 13F$765$0.3593--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$1.3k30k sharesTrimQ4 2021 13F$515$0.0432--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$4.1k11.5k sharesAddQ4 2021 13F$418$0.3567--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$2.3k800 sharesAddQ4 2021 13F$179$2.90--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$7k47.5k sharesTrimQ3 2021 13F$3.7k$0.148--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$14k200k sharesTrimQ3 2021 13F$2.8k$0.071--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$7.4k500k sharesTrimQ3 2021 13F$1.8k$0.0148--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$23k65.8k sharesTrimQ3 2021 13F$1.1k$0.3477--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$33k767.8k sharesAddQ3 2021 13F$937$0.0424--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$38k140.6k sharesTrimQ3 2021 13F$701$0.2729--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$35k210k sharesAddQ3 2021 13F$483$0.1675--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$17k80k sharesAddQ3 2021 13F$257$0.2095--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$1.8k30k sharesTrimQ3 2021 13F$252$0.0604--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$12k30 sharesTrimQ3 2021 13F$217$411.37--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$3.7k11.5k sharesTrimQ3 2021 13F$209$0.3203--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$9.6k27k sharesTrimQ3 2021 13F$196$0.3551--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$2.1k800 sharesAddQ3 2021 13F$186$2.67--
Guy Spier (Aquamarine Capital) other Unmapped 13F securityPORTFOLIO$11k47.5k sharesOtherQ2 2021 13F$11k$0.2268--
Guy Spier (Aquamarine Capital) exit Unmapped 13F securityPORTFOLIO$-5.9KExitQ2 2021 13F$5.9k----
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$35k210k sharesAddQ2 2021 13F$5k$0.1652--
Guy Spier (Aquamarine Capital) other Unmapped 13F securityPORTFOLIO$3.9k11.5k sharesOtherQ2 2021 13F$3.9k$0.3385--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$39k140.6k sharesAddQ2 2021 13F$3.2k$0.2779--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$32k767.8k sharesAddQ2 2021 13F$2k$0.0412--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$9.8k27k sharesAddQ2 2021 13F$1.7k$0.3624--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$13k30 sharesAddQ2 2021 13F$987$418.60--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$17k200k sharesTrimQ2 2021 13F$646$0.085--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$24k65.8k sharesAddQ2 2021 13F$595$0.3651--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$2k800 sharesAddQ2 2021 13F$303$2.44--
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