Taiwan Semiconductor Manufacturing Company (TSMC) closed at USD 398.37, down 2.77%.

Recent options activity in TSMC featured two major, multi-million dollar trades with opposing directional views, highlighting a mixed sentiment among large traders following the stock's decline.

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Options Indicators

TSM’s implied volatility is at 56.68%, and with an IV percentile of 93.23%, current option volatility is firmly in an elevated range, indicating that options are priced expensively relative to their own recent history. At the same time, the IV/HV ratio of 0.98 suggests implied volatility is roughly in line with realized volatility rather than dramatically overstating it, so while premiums are rich on a historical percentile basis, they are not excessively detached from the stock’s actual movement pattern. The Call/Put volume ratio is 0.65.

Large Trades

A put purchase worth $2.73 million stood out as the largest displayed trade, with 1,175 contracts of the September 18, 2026 $380.00 put purchased. With TSM referenced at $398.37, this strike is currently out of the money, making it a downside-oriented position that benefits from a meaningful drop in the stock before expiration. As a single-leg put purchase, it reflects a clearly bearish stance or a protective hedge, with the buyer paying premium for downside exposure over a long-dated horizon.

A short put sale worth $2.05 million was the other displayed large trade, consisting of 1,200 contracts of the December 18, 2026 $320.00 put sold. With the stock above the $320.00 strike, this put is also out of the money, so the trade expresses a moderately bullish view through premium collection, with the seller effectively betting that TSM will remain above that level into expiration. The strategy suggests either willingness to accumulate shares at a much lower effective entry point or confidence that downside risk to that strike is limited, making it a constructive but income-focused positioning.

Overall sentiment across all large trades was slightly bearish, with total bullish premium at $2.89 million versus total bearish premium at $3.21 million, leaving a net bearish difference of $0.33 million. The directional bias is therefore modestly negative rather than aggressively bearish, as the largest single trade was a long-dated downside put purchase, while the bullish side was driven mainly by out-of-the-money put selling that indicates support and premium harvesting rather than outright upside chasing. Taken together, the flow suggests investors are still willing to sell downside at lower levels, but the heavier premium commitment leaned toward protection or bearish positioning.

Strategy Reference

A trader with a neutral to bullish outlook might consider a cash-secured put sale at a strike like $320.00 for a low probability of assignment, while those preferring defined risk could implement a bear put spread, such as buying the $380 put and selling a lower-strike put to reduce the net premium paid and margin requirement.