Taiwan Semiconductor Manufactur (TSM)
Taiwan Semiconductor Manufactur · TSM · data through 2026-10-16 · free to read
TSM unusual options activity and options flow
What is the options flow saying about TSM?
On 2026-10-16, Taiwan Semiconductor Manufactur (TSM) traded $97.4M of call premium against $81.4M of put premium, 54% of it on the call side. The tape leans balanced. Volume and open interest below, updated after each close.
The session's options tape
How much open interest is standing
Across 51 sessions to 2026-10-16, TSM carries 91k of call open interest against 116k of puts, a put/call ratio of 1.27. Open interest is what is still on the book, as opposed to what changed hands today.
Where the premium has gone over three months
From 2026-07-21 to 2026-10-16, cumulative call premium reached $7.7B against $3.4B on puts, a net of +$4.3B. One day's flow is noise; the cumulative line is where a lean shows up.
TSM gamma exposure
Where is dealer gamma on TSM?
As of 2026-10-16, dealer gamma on Taiwan Semiconductor Manufactur (TSM) is negative, so dealer hedging amplifies moves. The sign has flipped 5 times over the window shown. A flip matters more than the level: it changes whether hedging flow works with the move or against it.
What dealer gamma has done
Total dealer gamma exposure on TSM over 51 sessions, 2026-05-08 to 2026-10-16. The sign flipped 5 times in that window.
When dealer gamma is positive, hedging leans against the move and tends to compress the range. When it is negative, hedging runs with the move and tends to extend it. The flip is the event worth watching, not the level.
TSM congress trades
Which members of Congress have traded TSM?
12 members of Congress disclosed 40 transactions in Taiwan Semiconductor Manufactur (TSM), 27 of them purchases. The most recent was filed 2026-10-12. Disclosures lag the trade by up to 45 days by law.
| Member | Chamber | Side | Traded | Disclosed | Size |
|---|---|---|---|---|---|
| Gilbert Cisneros | House · CA31 | BUY | 2026-09-22 | 2026-10-12 | $1001–$15000 |
| Richard W. Allen | House · GA12 | BUY | 2026-08-12 | 2026-09-22 | $1001–$15000 |
| Cleo Fields | House · LA06 | BUY | 2026-07-10 | 2026-07-30 | $1001–$15000 |
| Richard W. Allen | House · GA12 | BUY | 2026-05-08 | 2026-06-16 | $1001–$15000 |
| Cleo Fields | House · LA06 | BUY | 2026-04-09 | 2026-04-20 | $1001–$15000 |
| Gilbert Cisneros | House · CA31 | BUY | 2026-02-26 | 2026-03-09 | $1001–$15000 |
| Richard W. Allen | House · GA12 | BUY | 2026-02-19 | 2026-03-11 | $1001–$15000 |
| Gilbert Cisneros | House · CA31 | BUY | 2026-02-09 | 2026-03-09 | $100001–$250000 |
| Julia Letlow | House · LA05 | BUY | 2026-02-02 | 2026-03-12 | $1001–$15000 |
| Gilbert Cisneros | House · CA31 | BUY | 2026-01-30 | 2026-02-13 | $1001–$15000 |
| Cleo Fields | House · LA06 | BUY | 2026-01-08 | 2026-02-03 | $1001–$15000 |
| Gilbert Cisneros | House · CA31 | SELL | 2025-12-24 | 2026-01-12 | $1001–$15000 |
| Gilbert Cisneros | House · CA31 | BUY | 2025-11-18 | 2025-12-15 | $1001–$15000 |
| Lisa McClain | House · MI09 | SELL | 2025-10-31 | 2025-11-21 | $1001–$15000 |
| Lisa McClain | House · MI09 | SELL | 2025-10-30 | 2025-11-21 | $1001–$15000 |
| Lisa McClain | House · MI09 | BUY | 2025-10-30 | 2025-11-21 | $1001–$15000 |
| Cleo Fields | House · LA06 | BUY | 2025-10-23 | 2025-11-12 | $100001–$250000 |
| Gilbert Cisneros | House · CA31 | BUY | 2025-10-21 | 2025-11-18 | $1001–$15000 |
| Lisa McClain | House · MI09 | SELL | 2025-10-14 | 2025-11-21 | $1001–$15000 |
| Jared Moskowitz | House · FL23 | BUY | 2025-10-10 | 2025-11-22 | $1001–$15000 |
| Lisa McClain | House · MI09 | SELL | 2025-08-28 | 2025-09-12 | $50001–$100000 |
| Cleo Fields | House · LA06 | BUY | 2025-08-15 | 2025-09-03 | $15001–$50000 |
| Cleo Fields | House · LA06 | BUY | 2025-08-13 | 2025-09-03 | $1001–$15000 |
| Cleo Fields | House · LA06 | BUY | 2025-08-13 | 2025-09-03 | $250001–$500000 |
| Cleo Fields | House · LA06 | BUY | 2025-08-01 | 2025-09-03 | $100001–$250000 |
| Cleo Fields | House · LA06 | BUY | 2025-08-01 | 2025-09-03 | $1001–$15000 |
| Julia Letlow | House · LA05 | SELL | 2025-07-24 | 2026-01-13 | $1001–$15000 |
| Cleo Fields | House · LA06 | BUY | 2025-07-17 | 2025-08-06 | $100001–$250000 |
| Cleo Fields | House · LA06 | BUY | 2025-06-25 | 2025-07-01 | $100001–$250000 |
| Lisa McClain | House · MI09 | BUY | 2025-06-17 | 2025-08-13 | $1001–$15000 |
| Lisa McClain | House · MI09 | BUY | 2025-06-09 | 2025-08-13 | $1001–$15000 |
| Valerie Hoyle | House · OR04 | BUY | 2025-05-06 | 2025-09-12 | $1001–$15000 |
| Bruce Westerman | House · AR04 | SELL | 2025-04-21 | 2025-05-12 | $1001–$15000 |
| Josh Gottheimer | House · NJ05 | SELL | 2025-04-09 | 2025-05-14 | $1001–$15000 |
| Sheri Biggs | House · SC03 | SELL | 2025-03-18 | 2025-10-05 | $1001–$15000 |
| Julie Johnson | House · TX32 | SELL | 2025-03-11 | 2025-04-14 | $1001–$15000 |
| Josh Gottheimer | House · NJ05 | SELL | 2025-03-04 | 2025-04-10 | $1001–$15000 |
| Rob Bresnahan | House · PA08 | SELL | 2025-03-03 | 2025-03-27 | $1001–$15000 |
| Bruce Westerman | House · AR04 | BUY | 2025-03-03 | 2025-04-16 | $1001–$15000 |
| Josh Gottheimer | House · NJ05 | SELL | 2025-01-28 | 2025-02-10 | $1001–$15000 |
Members must file within 45 days of a transaction, so a disclosure date well after the trade date is normal rather than suspicious. Sizes are reported as brackets, never as exact amounts.
TSM insider buying and selling
Are insiders buying or selling TSM?
18 reported insider transactions in Taiwan Semiconductor Manufactur (TSM), 18 on the buy side. Officers and directors must file within two business days, so this is the least delayed ownership signal available. Names, titles and amounts below.
| Insider | Title | Side | Value | Avg price | Seen |
|---|---|---|---|---|---|
| Chin Yung-Pei | EVP, Co-COO | buy | 5319 | 79.39 | 2026-10-08 |
| Fang Shu-Hua | SVP, GC | buy | 4208 | 79.39 | 2026-10-08 |
| Hou Yung-Chin | SVP, Deputy Co-COO | buy | 4763 | 79.39 | 2026-10-08 |
| Mii Yuh-Jier | EVP, Co-COO | buy | 5399 | 79.39 | 2026-10-08 |
| Wei Che-Chia | COB, CEO | buy | 11432 | 79.39 | 2026-10-08 |
| Wu Shien-Yang | SVP | buy | 4208 | 79.39 | 2026-10-08 |
| Yeap Choh Fei | SVP | buy | 4128 | 79.39 | 2026-10-08 |
| Zhang Kevin Xiaoqiang | SVP, Deputy Co-COO | buy | 4684 | 79.39 | 2026-10-08 |
| Fang Shu-Hua | SVP, GC | buy | 154180 | 77.09 | 2026-09-04 |
| Yuan Lipen | VP | buy | 174023 | 74.05 | 2026-08-20 |
| Tien Bor-Zen | VP | buy | 73060 | 73.06 | 2026-08-04 |
| Tien Bor-Zen | VP | buy | 73820 | 72.73 | 2026-07-30 |
| Tien Bor-Zen | VP | buy | 301350 | 75.15 | 2026-07-29 |
| Lin Shyue-Shyh | VP | buy | 362140 | 72.59 | 2026-07-27 |
| Lin Shyue-Shyh | VP | buy | 146780 | 73.39 | 2026-07-22 |
| Lin Shyue-Shyh | VP | buy | 215360 | 71.79 | 2026-07-21 |
| Tien Bor-Zen | VP | buy | 152340 | 76.17 | 2026-06-30 |
| Yuan Lipen | VP | buy | 79190 | 79.19 | 2026-06-23 |
Officers and directors file a Form 4 within two business days of a transaction, which makes this the least delayed ownership signal available. A sale can mean many things, including a scheduled plan; a cluster of open-market buys is the rarer event.
Common questions about TSM
What does the options flow on TSM actually mean?
It is the money that changed hands in TSM options on 2026-10-16: $97.4M paid for calls, $81.4M for puts. Premium is the better read than contract count, because a thousand cheap far-dated calls and one large near-dated block are not the same conviction, and only premium tells them apart.
Is heavy call buying in TSM bullish?
Not by itself. 54% of TSM's premium sat on the call side, and a good share of any day's call volume is someone hedging a short, closing a position, or a market maker managing inventory. Flow says where money went, never why. It is one input among several, which is how it is weighted on the desk.
What is the difference between volume and open interest on TSM?
Volume is what traded today: 98157 calls and 91043 puts. Open interest is what is still on the book afterwards, currently 91k of calls against 116k of puts. Volume can spike and vanish the same day; open interest rising means positions were opened rather than closed.
What is dealer gamma exposure on TSM?
It is the aggregate gamma the market makers who sold TSM options are carrying. It matters because they hedge it, and that hedging is real buying and selling in the stock. As of 2026-10-16 it is negative.
What happens when TSM gamma is positive versus negative?
Positive gamma means dealers sell into strength and buy weakness, which compresses the range and makes moves fade. Negative gamma means they do the opposite, selling weakness and buying strength, which extends moves. Same stock, opposite character, depending only on which side dealers are on.
Why do the sign flips matter more than the level?
Because the flip is when the behaviour changes. TSM has flipped 5 times across the window shown here. A large positive number tells you little on its own; crossing zero tells you hedging flow just switched from working against the move to working with it.
Which members of Congress have traded TSM?
12 distinct members appear in the disclosures for Taiwan Semiconductor Manufactur, across 40 transactions, 27 of them purchases. The table above names each one with their chamber, the trade date and the date it was disclosed.
Why is there a gap between the trade date and the disclosure date on TSM?
The STOCK Act gives members up to 45 days to file. The most recent TSM entry here was traded 2026-09-22 and disclosed 2026-10-12. That lag is the law working as written, not evidence of anything, and it is the main reason this data is context rather than a signal.
Why are the amounts shown as ranges?
Because that is how they are filed. Members report a bracket, such as $1,001 to $15,000, never an exact figure. Anyone quoting a precise dollar amount for a congressional trade is estimating from the bracket.
Are insiders buying or selling TSM?
Across the filings shown here, 18 buy-side and 0 sell-side transactions in Taiwan Semiconductor Manufactur. Each row names the insider, their title and the value, because a director's purchase and a CEO's scheduled sale are not the same event even when the dollar figure matches.
Does insider selling in TSM mean something is wrong?
Usually not. Executives are paid in stock and sell for tax bills, houses and diversification, much of it through pre-scheduled 10b5-1 plans set months in advance. Selling is the normal state. It is the absence of buying, over long stretches, that says more than any single sale.
Why does insider buying carry more weight?
Because there is one reason to buy your own company's stock with your own money and many reasons to sell. A cluster of open-market purchases by several TSM insiders in the same window is the version worth noticing; a single small buy near a proxy deadline is often optics.
More on TSM
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