Insider Transactions
Form 4 buys & sells for tracked tickers, same-day tranches collapsed, newest first, each with a conviction & rarity score (hover a score for how it's built; click Score to rank by it) · buyouts & sponsor stakes flagged Control / M&A, after each day's scored trades and below them when ranked by score · last 30 days · showing 31 of 31 events matching · excludes filings pending amendment review
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Since: for sales a falling price is shown green (good timing for the seller); sorting uses the raw % change for both.
Discretionary buys & sales (codes P/S). Grants, exercises and withholdings:
show all transaction types (slower).
| Score | Ticker | Insider | Role | Transaction | Shares | Price | Value | Sincevs SPY | Date ▼ | 10b5-1 | Congress |
|---|---|---|---|---|---|---|---|---|---|---|---|
|
65
Open-market purchase+25
Unscheduled+15
CEO/CFO+20
29 co-buyers (fund-pattern ticker, capped)+5
Elevated65
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Huang Jen-Chau
Common Shares (2330.TW)
|
SVP and CFO | P Purchase | 28 | $79.39 | $2K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
65
Open-market purchase+25
Unscheduled+15
CEO/CFO+20
29 co-buyers (fund-pattern ticker, capped)+5
Elevated65
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Wei Che-Chia
Common Shares (2330.TW)
|
DirectorChairman and CEO | P Purchase | 144 | $79.39 | $11K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Cao Min
Common Shares (2330.TW)
|
VP | P Purchase | 51 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Chang Tzonz-Sheng
Common Shares (2330.TW)
|
SVP | P Purchase | 51 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Chen Chih-Ho
Common Shares (2330.TW)
|
Controller | P Purchase | 31 | $79.39 | $2K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Chen Pei-Hung
Common Shares (2330.TW)
|
VP | P Purchase | 43 | $79.39 | $3K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Chin Yung-Pei
Common Shares (2330.TW)
|
EVP and Co-COO | P Purchase | 67 | $79.39 | $5K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Chuang Juiping
Common Shares (2330.TW)
|
VP | P Purchase | 46 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Chuang Tzu-Sou
Common Shares (2330.TW)
|
VP | P Purchase | 46 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Fang Shu-Hua
Common Shares (2330.TW)
|
SVP and GC | P Purchase | 53 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
He Jun
Common Shares (2330.TW)
|
VP | P Purchase | 43 | $79.39 | $3K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Hou Yung-Chin
Common Shares (2330.TW)
|
SVP and Deputy Co-COO | P Purchase | 60 | $79.39 | $5K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Hsu Kuo-Chin
Common Shares (2330.TW)
|
VP | P Purchase | 52 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Hwang Yuan-Ko
Common Shares (2330.TW)
|
VP | P Purchase | 39 | $79.39 | $3K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Jang Syun-Ming
Common Shares (2330.TW)
|
VP | P Purchase | 46 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Ku Yao-Ching
Common Shares (2330.TW)
|
VP | P Purchase | 46 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Lee Chun-Hsien
Common Shares (2330.TW)
|
SVP | P Purchase | 51 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Lin Chris Horng-Dar
Common Shares (2330.TW)
|
VP and CIO | P Purchase | 44 | $79.39 | $3K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Lin Shyue-Shyh
Common Shares (2330.TW)
|
VP | P Purchase | 44 | $79.39 | $3K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Lu Chin-Sheng
Common Shares (2330.TW)
|
VP | P Purchase | 36 | $79.39 | $3K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Lu Lee-Chung
Common Shares (2330.TW)
|
VP | P Purchase | 49 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Mii Yuh-Jier
Common Shares (2330.TW)
|
EVP and Co-COO | P Purchase | 68 | $79.39 | $5K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Tien Bor-Zen
Common Shares (2330.TW)
|
VP | P Purchase 2 lines combined | 47 | $79.39 wtd avg | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Wang Ying-Lang
Common Shares (2330.TW)
|
SVP | P Purchase | 52 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Wu Shien-Yang
Common Shares (2330.TW)
|
SVP | P Purchase | 53 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Wu Yi-Huang
Common Shares (2330.TW)
|
VP | P Purchase | 39 | $79.39 | $3K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Yeap Choh Fei
Common Shares (2330.TW)
|
SVP | P Purchase | 52 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Yoo Chue-San
Common Shares (2330.TW)
|
VP | P Purchase | 50 | $79.39 | $4K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Yuan Lipen
Common Shares (2330.TW)
|
VP | P Purchase | 40 | $79.39 | $3K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
57
Open-market purchase+25
Unscheduled+15
Named officer+12
29 co-buyers (fund-pattern ticker, capped)+5
Some signal57
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
TSM 30 insiders, 14d |
Zhang Kevin Xiaoqiang
Common Shares (2330.TW)
|
SVP and Deputy Co-COO | P Purchase | 59 | $79.39 | $5K | — | 2026-10-07 | Unscheduled |
Cleo Fields · Purchase
|
|
66
Open-market purchase+25
Unscheduled+15
CEO/CFO+20
1 other insider(s) bought within 30d+6
Elevated66
Measures how rare and deliberate this trade is — not expected return. Tested against post-filing returns (median 113-day hold): the bands showed no short-horizon edge. Longer horizons untested.
|
OXM 2 insiders, 14d |
Chubb Thomas Caldecot III
Common Stock
|
DirectorCEO and President | P Purchase | 2,500 | $26.15 | $65K |
Since buy
$28.36 — +8.5% ▲
vs SPY -0.9%
28 days held · as of Oct 22
|
2026-09-24 | Unscheduled |
Gilbert Cisneros · Sale
|