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# December 2025
- URL: https://mosaicinvestingandoptionsjournal.ghost.io/posts/december-2025/
- Published: 2026-01-01T01:00:00.000Z
- Updated: 2026-09-21T09:23:43.000Z
- Description: 5 trades · Centene, ASML Holding · net +S$7,478.36
- Author: Irving Soh
- Tags: Monthly recap

5 trades this month. Net after fees: +S$7,478.36.

### Sold a call on Centene at US$39

*1 Dec 2025 · Expired*

I agreed to sell 2,200 shares of Centene at US$39 each if the price rose to that level by 5 Dec 2025\. For making that promise, I was paid S$1,264 upfront.

The share price didn’t cross US$39 by 5 Dec 2025, so no shares changed hands and I kept the full payment.

*Received S$1,263.83 · fees S$34.84 · net +S$1,229.00*

### Sold a call on Centene at US$38.5

*8 Dec 2025 · Called Away*

I agreed to sell 2,400 shares of Centene at US$38.5 each if the price rose to that level by 12 Dec 2025\. For making that promise, I was paid S$1,991 upfront.

The share price was above US$38.5 at expiry, so the 2,400 shares were sold at US$38.5 each. I kept the upfront payment.

*Received S$1,991.50 · fees S$38.02 · net +S$1,953.48*

### Sold a put on ASML Holding at US$1,065

*16 Dec 2025 · Assigned*

I agreed to buy 100 shares of ASML Holding at US$1,065 each if the price fell to that level by 19 Dec 2025\. For making that promise, I was paid S$1,455 upfront.

The share price was below US$1,065 at expiry, so I bought the 100 shares at US$1,065 each. The upfront payment stays with me either way.

*Received S$1,455.32 · fees S$4.21 · net +S$1,451.11*

### Sold a call on ASML Holding at US$1,060

*22 Dec 2025 · Called Away*

I agreed to sell 100 shares of ASML Holding at US$1,060 each if the price rose to that level by 26 Dec 2025\. For making that promise, I was paid S$1,462 upfront.

The share price was above US$1,060 at expiry, so the 100 shares were sold at US$1,060 each. I kept the upfront payment.

*Received S$1,461.71 · fees S$4.21 · net +S$1,457.49*

### Sold a put on ASML Holding at US$1,075

*30 Dec 2025 · Expired*

I agreed to buy 100 shares of ASML Holding at US$1,075 each if the price fell to that level by 2 Jan 2026\. For making that promise, I was paid S$1,391 upfront.

The share price didn’t cross US$1,075 by 2 Jan 2026, so no shares changed hands and I kept the full payment.

*Received S$1,391.49 · fees S$4.21 · net +S$1,387.28*

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*S$ converted at US$1 = S$1.2766\. Strike prices are in US$, as written in the contract.*