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) trim Unmapped 13F securityPORTFOLIO$17k80k sharesTrimQ2 2021 13F$230$0.2063--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$2.1k30k sharesAddQ2 2021 13F$155$0.0688--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$9.2k500k sharesAddQ2 2021 13F$25$0.0184--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$30k767.8k sharesAddQ1 2021 13F$6.4k$0.0387--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$30k210k sharesAddQ1 2021 13F$4.3k$0.1414--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$36k140.6k sharesAddQ1 2021 13F$3.3k$0.2555--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$18k200k sharesAddQ1 2021 13F$2.6k$0.0882--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$9.2k500k sharesAddQ1 2021 13F$1.8k$0.0184--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$17k80k sharesTrimQ1 2021 13F$1.7k$0.2092--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$5.9k151.7k sharesAddQ1 2021 13F$1.3k$0.0391--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$12k30 sharesAddQ1 2021 13F$1.1k$385.70--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$1.9k30k sharesAddQ1 2021 13F$284$0.0636--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$1.7k800 sharesAddQ1 2021 13F$248$2.06--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$8.1k27k sharesAddQ1 2021 13F$227$0.2986--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$23k65.8k sharesTrimQ1 2021 13F$59$0.356--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$15k200k sharesAddQ4 2020 13F$9.4k$0.0752--
Guy Spier (Aquamarine Capital) exit Unmapped 13F securityPORTFOLIO$-9.3KExitQ4 2020 13F$9.3k----
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$23k767.8k sharesAddQ4 2020 13F$4.8k$0.0303--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$25k210k sharesAddQ4 2020 13F$4.3k$0.1209--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$18k80k sharesAddQ4 2020 13F$3.7k$0.2305--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$33k140.6k sharesAddQ4 2020 13F$2.7k$0.2319--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$23k65.8k sharesAddQ4 2020 13F$1.2k$0.3569--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$4.6k151.7k sharesAddQ4 2020 13F$1k$0.0302--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$10k30 sharesAddQ4 2020 13F$834$347.80--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$7.3k500k sharesAddQ4 2020 13F$615$0.0147--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$1.6k30k sharesAddQ4 2020 13F$290$0.0542--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$1.4k800 sharesAddQ4 2020 13F$230$1.75--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$7.8k27k sharesAddQ4 2020 13F$10$0.2902--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$30k140.6k sharesAddQ3 2020 13F$4.8k$0.2129--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$22k65.8k sharesAddQ3 2020 13F$2.8k$0.3382--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$9.3k760k sharesAddQ3 2020 13F$1.7k$0.0123--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$9.6k30 sharesAddQ3 2020 13F$1.6k$320.00--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$21k210k sharesAddQ3 2020 13F$1.1k$0.1003--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$15k80k sharesAddQ3 2020 13F$1k$0.1836--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$6.7k500k sharesAddQ3 2020 13F$1k$0.0135--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$5.6k120k sharesTrimQ3 2020 13F$547$0.047--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$1.3k30k sharesAddQ3 2020 13F$441$0.0445--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$7.8k27k sharesAddQ3 2020 13F$408$0.2899--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$3.6k151.7k sharesTrimQ3 2020 13F$318$0.0235--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$18k767.8k sharesAddQ3 2020 13F$261$0.0241--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$1.2k800 sharesAddQ3 2020 13F$38$1.47--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$14k80k sharesTrimQ2 2020 13F$18k$0.1706--
Guy Spier (Aquamarine Capital) trim Unmapped 13F securityPORTFOLIO$7.6k760k sharesTrimQ2 2020 13F$5.4k$0.01--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$19k65.8k sharesAddQ2 2020 13F$3.6k$0.2957--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$7.4k27k sharesAddQ2 2020 13F$2.1k$0.2747--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$5.7k500k sharesAddQ2 2020 13F$2.1k$0.0114--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$20k210k sharesAddQ2 2020 13F$2k$0.0952--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$18k767.8k sharesAddQ2 2020 13F$1.9k$0.0237--
Guy Spier (Aquamarine Capital) add Unmapped 13F securityPORTFOLIO$6.2k120k sharesAddQ2 2020 13F$1.1k$0.0515--
Guy Spier (Aquamarine Capital) other Unmapped 13F securityPORTFOLIO$1.1k800 sharesOtherQ2 2020 13F$1.1k$1.42--
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