Institutional 13F · Context Only · Never a Buy List机构 13F · 仅供背景参考 · 非买入清单
Aquamarine Zurich AG (Spier)
superinvestor_value
—
Book持仓规模
$144091
long US listed only仅美股多头
Positions持仓数
7
86% resolved已解析
Top-10 concentration前十集中度
100%
% of book占组合%
Turnover换手
LOW
7.7% per quarter每季
Median excess中位超额
-25%
buys vs SPY, since filing买入相对SPY，自申报起 · n 3
Hit rate胜率
0%
share of buys beating SPY跑赢SPY的买入占比
Core lean — the 10-second read核心倾向 — 10秒速读
No thematic add cluster this quarter — the latest buys do not map to a tracked theme.本季度无主题性加仓集群——最新买入未映射到任何跟踪主题。
Descriptive read of the latest filing — themes clustered from curated baskets (Finviz fallback), added-pp = Σ % of book bought this quarter. Not a forecast.基于最新申报的描述性解读——主题按精选篮子聚类（Finviz 兜底），added-pp = 本季度买入占组合百分比之和。非预测。
Grade & excess history评级与超额历史
per-quarter buy cohorts, scored on public filing dates vs SPY — descriptive ranks in a curated survivor cohort按季度买入队列，以公开申报日为锚相对SPY评分——精选幸存者队列中的描述性排名No quarter history available for this fund.该基金暂无季度历史数据。
Sector exposure & rotation行业配置与轮动
value-weighted, latest filing; QoQ deltas vs prior quarter按市值加权，最新申报；季度环比变化对上季Current weights当前权重 · 2026-06-30
Financial
71.9%
▼ -0.7pp
Unclassified
28.1%
▲ +0.7pp
Theme categories主题类别
US Sectors (EW) 42.4%
Financials 29.5%
Rotating into (QoQ)轮入（环比）
no QoQ increases无环比增持
Rotating out of (QoQ)轮出（环比）
Financial -0.7pp
Quarter history — top-3 sectors季度历史 — 前三大行业
| 2026-06-30 | Financial 72% · Unclassified 28% · |
| 2026-03-31 | Financial 73% · Unclassified 27% · |
| 2025-12-31 | Financial 74% · Unclassified 26% · |
| 2025-09-30 | Financial 73% · Unclassified 21% · Technology 4% |
| 2025-06-30 | Financial 72% · Unclassified 19% · Technology 8% |
| 2025-03-31 | Financial 72% · Unclassified 20% · Technology 6% |
| 2024-12-31 | Financial 72% · Unclassified 20% · Technology 6% |
| 2024-09-30 | Financial 69% · Unclassified 22% · Technology 7% |
| 2024-06-30 | Financial 67% · Unclassified 21% · Technology 10% |
| 2024-03-31 | Financial 68% · Unclassified 22% · Technology 9% |
| 2023-12-31 | Financial 67% · Unclassified 24% · Technology 7% |
| 2023-09-30 | Financial 67% · Unclassified 25% · Technology 7% |
Full book完整持仓
every resolved position as filed — click a column header to sort. Conviction is a descriptive composite, not a forecast.截至申报日的全部已解析持仓——点击列头排序。信念分为描述性综合指标，非预测。6 positions shown项持仓 · resolved已解析 6/7 (86%) · unresolved CUSIPs are excluded from this table but counted in book totals未解析CUSIP不列入本表，但计入组合总额
| #↕ | Ticker标的 ↕ | Company公司 ↕ | % book仓位% ↕ | Value金额 ↕ | Action动作 ↕ | Δ sharesΔ股数 ↕ | Add streak连加季数 ↕ | Conviction信念分 ↕ | Sector行业 ↕ | Themes主题 | Since filing自申报 ↕ |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 |  BRK-B |
Berkshire Hathaway Inc Del | 33.9% | $48838 | hold | +0% | — | 70 · HIGH | Financial | Financials (Equal-Weight) | -1% |
| 2 |  BRK-A |
Berkshire Hathaway Inc Del | 15.6% | $22466 | hold | +0% | — | 64 · MODERATE | — | — | — |
| 3 |  AXP |
American Express Co | 15.3% | $21986 | hold | +0% | — | 48 · MODERATE | Financial | Payments & Fintech, Financials (Equal-Weight) | +4% |
| 4 |  MA |
Mastercard Incorporated | 14.3% | $20544 | hold | +0% | — | 42 · LOW | Financial | Payments & Fintech, Financials (Equal-Weight) | +5% |
| 5 |  MCO |
Moodys Corp | 8.5% | $12229 | hold | +0% | — | 37 · LOW | Financial | Financials (Equal-Weight) | +4% |
| 6 |  DJCO |
Daily Journal Corp | 4.8% | $6914 | hold | +0% | — | 31 · LOW | — | — | — |
Rotation detail轮动明细
this filing cycle, uncapped — adds/new and trims from the resolved book, exits from the rotation feed本申报周期，不设上限——新建/加仓与减持取自已解析持仓，清仓取自轮动数据Rotated into轮入 (0)
| no new buys this cycle本周期无新买入 |
Rotated out of轮出 (6)
 AMR exit |
-100% | -48% |
 BABA exit |
-100% | -39% |
 BAC exit |
-100% | +9% |
 CNR exit |
-100% | -21% |
 GOOGL exit |
-100% | -2% |
 MU exit |
-100% | +145% |
Trade log交易记录
last 40 graded trades, filing-date anchored, newest first — variable hold vs SPY最近40笔已评分交易，以申报日为锚，最新在前——持有期不定，相对SPYNo graded trades available for this fund.该基金暂无已评分交易。
Caveats注意事项 —
13F = quarterly, ~45-day lag, long-only US listed ≥$100M. No shorts, no cash, no non-US positions. This desk is context — ownership is never a directional signal here.13F = 季度披露，约45天滞后，仅含美股多头且持仓≥1亿美元。不含空头、现金或非美股仓位。本台仅为背景参考——持仓数据在此永远不是方向性信号。
Grades and reliability are descriptive ranks within a curated survivor cohort — they measure what filings did after their filing dates, not a manager-selection edge. Conviction and core-lean reads are descriptive composites earning a forward record via the pre-registered ledger (L5); sector/theme classification applies the current map to history.评级与可靠性为精选幸存者队列中的描述性排名——衡量申报日之后持仓的表现，而非经理选择能力。信念分与核心倾向为描述性综合指标，通过预注册账本（L5）积累前瞻记录；行业/主题分类将当前映射应用于历史。