Guy Spier Top Holdings of 2025-09-30
| Ticker | Name | Shares | Value | % of Portfolio | Time Held | % Change |
|---|---|---|---|---|---|---|
| 140,600 | $70.68 M | 22.27% | 8.7 Years | 0.00% | ||
| 210,000 | $69.75 M | 21.98% | 8.7 Years | 0.00% | ||
| 767,845 | $39.61 M | 12.48% | 8.7 Years | 0.00% | ||
| 65,750 | $37.4 M | 11.78% | >10 Years | 0.00% | ||
| 60,000 | $28.98 M | 9.13% | 9.5 Years | 0.00% | ||
| 30 | $22.63 M | 7.13% | 8.7 Years | 0.00% | ||
| 80,000 | $13.39 M | 4.22% | 6 Years | -60.00% | ||
| 27,000 | $12.86 M | 4.05% | 9.5 Years | 0.00% | ||
| 47,500 | $8.49 M | 2.68% | 4.3 Years | 0.00% | ||
| 11,500 | $5.35 M | 1.69% | 4.3 Years | 0.00% |
Recent Moves
Guy Spier's Historical Top Holdings Breakdown
Portfolio Date:
Guy Spier Top Stock Picks
| Ticker | Name | Date | Activity | Shares | Shares Change | Value Change |
|---|---|---|---|---|---|---|
| 09/30/2025 | Reduce -60.0% | 80,000 | -120,000 | $20.08 M | ||
| 03/31/2025 | Sold Out | 8,100 | -8,100 | $1.14 M | ||
| 03/31/2025 | New Buy | 10,740 | 10,740 | $828,000 | ||
| 06/30/2024 | New Buy | 8,000 | 8,000 | $2.24 M | ||
| 06/30/2024 | New Buy | 8,100 | 8,100 | $1.23 M | ||
| 03/31/2024 | Reduce -25.0% | 60,000 | -20,000 | $8.72 M | ||
| 12/31/2022 | Add 1900.0% | 16,000 | 15,200 | $1.34 M | ||
|
N/A
|
TWITTER INC
|
06/30/2022 | Sold Out | 30,000 | -30,000 | $1.16 M |
| 06/30/2021 | New Buy | 47,500 | 47,500 | $10.77 M | ||
| 06/30/2021 | Sold Out | 151,741 | -151,741 | $5.93 M |
Guy Spier's Sector Breakdowns
Portfolio Date:
About Guy Spier
Guy Spier is a Zurich‑based investor, author, and manager of the Aquamarine Fund, modeled after Warren Buffett's early partnerships. Educated at Oxford University and Harvard Business School, he began his career in banking and consulting before dedicating himself to value investing. Spier gained global attention in 2008 when he and Mohnish Pabrai bid $650,100 for a charity lunch with Buffett. He later chronicled his journey in the acclaimed book The Education of a Value Investor.
Frequently Asked Questions
Guy Spier did not initiate any new positions in the latest quarter.
According to the 13F filing for Q3 2025, There is no available data showing what Guy Spier is buying.
Guy Spier’s firm may occasionally request confidential treatment under SEC rule 13F-HR, which allows temporary non-disclosure of certain positions.
Guy Spier Portfolio and Latest Trades
📑 This page provides a complete record of Guy Spier’s stock and ETF transactions based on SEC Form 13F filings. All trades are listed in reverse chronological order, allowing investors to follow his historical buy and sell decisions across multiple decades.
| Ticker | Name | Date | Activity | Shares | Shares Change | Value Change |
|---|---|---|---|---|---|---|
| MU | 09/30/2025 | Reduce -60.0% | 80,000 | -120,000 | $20.08 M | |
| ARCH | 03/31/2025 | Sold Out | 8,100 | -8,100 | $1.14 M | |
| CNR | 03/31/2025 | New Buy | 10,740 | +10,740 | $828,000 | |
| AMR | 06/30/2024 | New Buy | 8,000 | +8,000 | $2.24 M | |
| ARCH | 06/30/2024 | New Buy | 8,100 | +8,100 | $1.23 M | |
| RACE | 03/31/2024 | Reduce -25.0% | 60,000 | -20,000 | $8.72 M | |
| GOOGL | 12/31/2022 | Add 1900.0% | 16,000 | +15,200 | $1.34 M | |
| N/A |
TWITTER INC
|
06/30/2022 | Sold Out | 30,000 | -30,000 | $1.16 M |
| BABA | 06/30/2021 | New Buy | 47,500 | +47,500 | $10.77 M | |
| DJCO | 06/30/2021 | New Buy | 11,500 | +11,500 | $3.89 M | |
| WFC | 06/30/2021 | Sold Out | 151,741 | -151,741 | $5.93 M | |
| MU | 12/31/2020 | Add 66.7% | 200,000 | +80,000 | $6.01 M | |
| N/A |
Fiat Chrysler Auto
|
12/31/2020 | Sold Out | 760,000 | -760,000 | $9.32 M |
| GOOGL | 06/30/2020 | New Buy | 16,000 | +16,000 | $1.13 M | |
| MCO | 06/30/2020 | Add 8.0% | 27,000 | +2,000 | $549,481.48 | |
| SRG | 06/30/2020 | Add 25.0% | 500,000 | +100,000 | $1.14 M | |
| N/A |
TWITTER INC
|
06/30/2020 | New Buy | 30,000 | +30,000 | $894,000 |
| RACE | 06/30/2020 | Reduce -60.0% | 80,000 | -120,000 | $20.47 M | |
| N/A |
Fiat Chrysler Auto
|
06/30/2020 | Reduce -57.8% | 760,000 | -1.04 M | $10.45 M |
| AXP | 03/31/2020 | Reduce -5.6% | 210,000 | -12,430 | $1.06 M |
Guy Spier's Latest 13F Holdings
📑 This page provides a detailed view of Guy Spier's portfolio holdings based on official SEC Form 13F filings. Investors can review the latest quarter's positions and seamlessly switch between different quarters to explore how the portfolio has evolved over time.
Holdings are categorized into Stocks/ETFs, Options, Debt, and Other, with transaction markers such as New Buy, Add, Reduce, No Change, and Sold Out. Reported anomalies are corrected where possible, and share counts are adjusted to reflect corporate actions like stock splits.
In addition, we calculate the holding duration of each asset, allowing investors to see how long positions have been maintained across quarters. By exploring both current and historical holdings, users gain insights into turnover, portfolio concentration, asset allocation shifts, and the top stock and ETF positions of Guy Spier.
| Name | Shares | Value | % of Portfolio | Time Held | % Change | |
|---|---|---|---|---|---|---|
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Note: Shares, Shares Change - split-adjusted.
Guy Spier’s Quarterly 13F Portfolio History
📊 This page provides a historical view of Guy Spier’s portfolio holdings based on official SEC Form 13F filings.
Explore how investments have evolved quarter by quarter, with insights into turnover rates, portfolio concentration, asset allocation shifts, and the firm’s top 10 stock and ETF positions.
| Quarter | Holdings | Total Value | Turnover Rate | Top 10 Stock & ETF Holdings |
|---|