Institutional 13F · Context Only · Never a Buy List机构 13F · 仅供背景参考 · 非买入清单
Berkshire Hathaway (Buffett)
superinvestor_value
C
Reliability improving可靠性走强
leaderboard rank榜单排名 #28
Book持仓规模
$263.1B
long US listed only仅美股多头
Positions持仓数
29
100% resolved已解析
Top-10 concentration前十集中度
91%
% of book占组合%
Turnover换手
LOW
7.1% per quarter每季
Median excess中位超额
-14%
buys vs SPY, since filing买入相对SPY，自申报起 · n 36
Hit rate胜率
28%
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
Core lean: Communication Services (Equal-Weight) — added GOOGL, GOOG (+6.3pp of book this quarter)核心倾向：通信服务（等权） — 本季度加仓 GOOGL、GOOG（占组合 +6.3pp）
Communication Services (Equal-Weight)通信服务（等权）
+6.3pp
6.3% of book held占组合持有
· 2 names标的
· US Sectors (EW)
GOOGL
GOOG
Magnificent Seven七巨头
+5.9pp
27.9% of book held占组合持有
· 2 names标的
· AI & Technology
GOOGL
AI Software & PlatformsAI 软件与平台
+5.9pp
5.9% of book held占组合持有
· 1 names标的
· AI & Technology
GOOGL
Quantum Computing量子计算
+5.9pp
5.9% of book held占组合持有
· 1 names标的
· AI & Technology
GOOGL
Travel & Experiences旅行与体验
+1.0pp
1.0% of book held占组合持有
· 1 names标的
· Consumer Cyclical
DAL
Industrials (Equal-Weight)工业（等权）
+1.0pp
1.0% of book held占组合持有
· 1 names标的
· US Sectors (EW)
DAL
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Reliability可靠性: improving走强 · 8 scored quarters已评分季度 · 25% positive为正 · recent-4 median近4季中位 -4% vs all-time对全期 -23%
Median excess by quarter各季度中位超额: ▅▁▂▁▄█▆▇ (oldest → newest, shifted by the series minimum so negatives render由旧到新，按序列最小值平移以呈现负值)
| Quarter季度 | Buys买入数 | Median excess中位超额 | Hit胜率 | Median fwd 63d中位前瞻63日 |
|---|---|---|---|---|
| 2023-06-30 | 3 | -16% | 33% | -2% |
| 2024-09-30 | 3 | -51% | 0% | -8% |
| 2024-12-31 | 4 | -46% | 0% | +1% |
| 2025-03-31 | 3 | -59% | 0% | -16% |
| 2025-06-30 | 8 | -30% | 38% | -9% |
| 2025-09-30 | 3 | +5% | 67% | +7% |
| 2025-12-31 | 3 | -9% | 33% | -5% |
| 2026-03-31 | 6 | +0% | 50% | — |
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 · 2026-03-31
Financial
35.8%
▼ -6.5pp
Technology
22.8%
▼ -0.6pp
Consumer Defensive
15.8%
▲ +0.9pp
Energy
13.2%
▲ +2.0pp
Communication Services
7.9%
▲ +4.7pp
Healthcare
1.8%
▼ -0.2pp
Industrials
1.2%
▲ +0.9pp
Unclassified
0.6%
▼ -0.2pp
Financials
0.4%
▼ -0.1pp
Consumer Cyclical
0.4%
▼ -0.6pp
Basic Materials
0.2%
▼ -0.1pp
Consumer Discretionary
0.0%
▼ -0.2pp
Theme categories主题类别
AI & Technology 27.9%
Financials 22.2%
US Sectors (EW) 19.3%
Energy & Power 13.2%
Consumer Defensive 11.6%
Healthcare 1.8%
Rotating into (QoQ)轮入（环比）
Communication Services +4.7pp
Energy +2.0pp
Industrials +0.9pp
Rotating out of (QoQ)轮出（环比）
Financial -6.5pp
Consumer Cyclical -0.6pp
Technology -0.6pp
Quarter history — top-3 sectors季度历史 — 前三大行业
| 2026-03-31 | Financial 36% · Technology 23% · Consumer Defensive 16% |
| 2025-12-31 | Financial 42% · Technology 23% · Consumer Defensive 15% |
| 2025-09-30 | Financial 41% · Technology 24% · Consumer Defensive 15% |
| 2025-06-30 | Financial 41% · Technology 24% · Consumer Defensive 16% |
| 2025-03-31 | Financial 37% · Technology 27% · Consumer Defensive 17% |
| 2024-12-31 | Financial 38% · Technology 29% · Consumer Defensive 15% |
| 2024-09-30 | Financial 39% · Technology 27% · Consumer Defensive 16% |
| 2024-06-30 | Financial 37% · Technology 31% · Consumer Defensive 14% |
| 2024-03-31 | Technology 42% · Financial 30% · Consumer Defensive 12% |
| 2023-12-31 | Technology 51% · Financial 24% · Consumer Defensive 11% |
| 2023-09-30 | Technology 52% · Financial 21% · Consumer Defensive 11% |
| 2023-06-30 | Technology 53% · Financial 21% · Consumer Defensive 11% |
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。29 positions shown项持仓 · resolved已解析 29/29 (100%) · 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 |  AAPL |
Apple Inc | 22.0% | $57.8B | hold | +0% | — | 70 · HIGH | Technology | Magnificent Seven, Technology (Equal-Weight) | +9% |
| 2 |  AXP |
American Express Co | 17.4% | $45.9B | hold | +0% | — | 69 · MODERATE | Financial | Payments & Fintech, Financials (Equal-Weight) | +14% |
| 3 |  KO |
Coca Cola Co | 11.6% | $30.4B | hold | +0% | — | 68 · MODERATE | Consumer Defensive | Defensives, Consumer Staples (Equal-Weight) | +4% |
| 4 |  BAC |
Bank America Corp | 9.5% | $25.0B | hold | -1% | — | 66 · MODERATE | Financial | Financials (Equal-Weight) | +23% |
| 5 |  CVX |
Chevron Corporation | 6.6% | $17.5B | trim | -35% | — | 65 · MODERATE | Energy | US Energy Complex, Energy (Equal-Weight) | -4% |
| 6 |  OXY |
Occidental Pete Corp | 6.5% | $17.2B | hold | +0% | — | 64 · MODERATE | Energy | US Energy Complex, Energy (Equal-Weight) | -12% |
| 7 | GOOGL |
Alphabet Inc | 5.9% | $15.6B | add | +204% | 1q | 68 · MODERATE | Communication Services | Magnificent Seven, AI Software & Platforms, Quantum Computing | -12% |
| 8 |  CB |
Chubb Ltd Switz | 4.2% | $11.2B | hold | +0% | — | 62 · MODERATE | Financial | Insurance & Brokers, Financials (Equal-Weight) | +5% |
| 9 |  MCO |
Moodys Corp | 4.1% | $10.8B | hold | +0% | — | 60 · MODERATE | Financial | Financials (Equal-Weight) | +16% |
| 10 |  KHC |
Kraft Heinz Co | 2.8% | $7.3B | hold | +0% | — | 49 · MODERATE | Consumer Defensive | Consumer Staples (Equal-Weight) | +15% |
| 11 |  DVA |
Davita Inc | 1.8% | $4.6B | hold | -5% | — | 33 · LOW | Healthcare | GLP-1 & Obesity, Health Care (Equal-Weight) | +14% |
| 12 |  KR |
Kroger Co | 1.4% | $3.6B | hold | +0% | — | 32 · LOW | Consumer Defensive | Consumer Staples (Equal-Weight) | -13% |
| 13 |  SIRI |
Siriusxm Holdings Inc | 1.1% | $2.9B | hold | +0% | — | 30 · LOW | Communication Services | Music | +19% |
| 14 | DAL |
Delta Air Lines Inc | 1.0% | $2.6B | new | — | 1q | 24 · LOW | Industrials | Travel & Experiences, Industrials (Equal-Weight) | +20% |
| 15 |  VRSN |
Verisign Inc | 0.8% | $2.2B | hold | +0% | — | 28 · LOW | Technology | Technology (Equal-Weight) | -11% |
| 16 |  COF |
Capital One Finl Corp | 0.5% | $1.3B | hold | +0% | — | 27 · LOW | Financial | Payments & Fintech, Financials (Equal-Weight) | +12% |
| 17 |  NYT |
New York Times Co Mtn Be | 0.5% | $1.3B | add | +199% | 2q | 36 · LOW | Communication Services | — | -1% |
| 18 |  ALLY |
Ally Finl Inc | 0.4% | $1.1B | hold | +0% | — | 24 · LOW | Financials | Neobanks | +10% |
| 19 | GOOG |
Alphabet Inc | 0.4% | $1.0B | new | — | 1q | 18 · LOW | Communication Services | Communication Services (Equal-Weight) | -12% |
| 20 |  LLYVK |
Liberty Live Holdings Inc | 0.4% | $996M | hold | -3% | — | 22 · LOW | — | — | — |
| 21 |  LEN |
Lennar Corp | 0.3% | $877M | add | +43% | 1q | 26 · LOW | Consumer Cyclical | Housing Chain, Consumer Discretionary (Equal-Weight) | +2% |
| 22 |  NUE |
Nucor Corp | 0.2% | $661M | trim | -39% | — | 20 · LOW | Basic Materials | Materials (Equal-Weight) | +2% |
| 23 |  LLYVA |
Liberty Live Holdings Inc | 0.2% | $457M | hold | +0% | — | 18 · LOW | — | — | — |
| 24 |  LPX |
Louisiana Pac Corp | 0.2% | $412M | hold | +0% | — | 17 · LOW | Industrials | — | +3% |
| 25 |  STZ |
Constellation Brands Inc | 0.0% | $95M | trim | -95% | — | 16 · LOW | Consumer Defensive | Consumer Staples (Equal-Weight) | -6% |
| 26 |  NVR |
Nvr Inc | 0.0% | $73M | hold | +0% | — | 15 · LOW | Consumer Cyclical | Housing Chain, Consumer Discretionary (Equal-Weight) | +15% |
| 27 |  M |
Macys Inc | 0.0% | $55M | new | — | 1q | 9 · LOW | Consumer Discretionary | Omnichannel | +27% |
| 28 |  LEN-B |
Lennar Corp | 0.0% | $20M | add | +31% | 1q | 17 · LOW | — | — | — |
| 29 |  JEF |
Jefferies Financial Group In | 0.0% | $18M | hold | +0% | — | 12 · LOW | Financials | — | +8% |
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 (7)
| GOOGL add |
5.9% | -12% |
| DAL new |
1.0% | +20% |
| NYT add |
0.5% | -1% |
| GOOG new |
0.4% | -12% |
| LEN add |
0.3% | +2% |
| M new |
0.0% | +27% |
| LEN-B add |
0.0% | — |
Rotated out of轮出 (13)
| CVX trim |
-35% | -4% |
| NUE trim |
-39% | +2% |
| STZ trim |
-95% | -6% |
 ALLE exit |
-100% | +6% |
 AMZN exit |
-100% | -7% |
 AON exit |
-100% | +10% |
 CHTR exit |
-100% | -7% |
 DPZ exit |
-100% | +8% |
 FWONK exit |
-100% | +10% |
 LAMR exit |
-100% | +8% |
 MA exit |
-100% | +10% |
 POOL exit |
-100% | +17% |
 UNH exit |
-100% | +7% |
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。