Silicon Motion Technology (SIMO) Options Chain

NASDAQ: SIMOTechnologySemiconductorsUSD

263.90+2.01 (+0.77%)

At close: Oct 9, 4:00 PM ET · Delayed 15 min

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 69
Share price: $263.90
Put/call ratio (OI): 0.36
Put/call ratio (volume): 0.21
ATM implied volatility: 77.2%
Expected move: ±$88.59
Open interest (C / P): 5.46K / 1.98K

SIMO options summary

The SIMO options chain for the December 18, 2026 expiration lists 58 call and 49 put contracts, with 69 days until expiration. Open interest stands at 5,458 calls and 1,979 puts, a put/call ratio of 0.36, which is tilted bullish, with calls outnumbering puts. At-the-money implied volatility near the $260.00 strike is 77.2%, which implies the market expects a move of about ±$88.59 (33.6%) in Silicon Motion Technology stock by expiration.

The most open interest sits at the $250.00 call (789 contracts) and the $200.00 put (239 contracts).

Summary generated from market data by MetaCap's automated system. Methodology

SIMO options chain · December 18, 2026

SIMO calls and puts by strike price. Shaded cells are in the money.
Calls							Puts
OI	Vol	IV	Last	Bid	Ask	Strike	Bid	Ask	Last	IV	Vol	OI
1	—	180.5%	76.50	192.00	199.70	70.00	0.00	1.50	0.75	152.1%	10	30
15	4	—	235.88	165.70	173.40	75.00	0.00	0.00	2.41	50.0%	1	0
0	1	—	200.30	0.00	0.00	80.00	0.00	1.50	0.56	137.4%	10	20
0	2	—	165.00	0.00	0.00	85.00	0.00	7.30	3.20	178.6%	1	16
6	4	358.1%	237.17	201.00	206.50	90.00	0.00	0.65	0.14	110.2%	4	20
2	1	109.8%	167.80	165.40	173.30	95.00	0.00	2.65	0.52	131.1%	2	18
0	2	—	152.00	0.00	0.00	100.00	0.00	2.70	0.45	125.5%	1	33
23	5	—	172.60	137.70	145.00	105.00	0.00	6.30	5.00	143.1%	1	21
7	7	—	139.48	145.10	152.40	110.00	0.00	3.10	1.00	117.3%	2	17
3	1	—	131.00	140.50	147.90	115.00	0.00	1.30	1.10	96.0%	1	31
23	15	102.5%	158.35	140.90	149.40	120.00	0.00	2.95	0.90	105.8%	2	40
0	1	—	124.00	0.00	0.00	125.00	0.00	3.60	1.35	105.1%	4	27
10	1	97.2%	151.80	131.50	139.40	130.00	0.00	3.80	1.00	101.4%	10	13
23	1	293.2%	130.20	167.00	174.20	135.00	0.00	4.10	2.90	98.3%	1	219
13	1	88.8%	102.73	122.00	129.00	140.00	0.20	4.50	1.86	96.6%	1	41
0	10	—	98.33	0.00	0.00	145.00	0.05	3.00	2.32	83.8%	3	14
44	15	88.0%	130.65	112.50	120.10	150.00	1.00	3.30	2.74	85.8%	1	114
5	1	88.0%	127.00	108.00	115.70	155.00	0.70	4.60	3.08	85.8%	2	8
12	1	—	128.05	91.80	98.30	160.00	1.40	4.00	2.68	81.9%	1	51
6	12	—	151.90	87.30	95.10	165.00	1.90	7.50	10.00	90.4%	2	4
11	2	244.1%	181.00	138.00	145.60	170.00	2.60	6.20	5.00	84.2%	20	61
25	20	85.3%	109.55	90.40	98.30	175.00	3.00	8.30	5.86	86.3%	1	17
30	1	83.9%	92.00	86.00	94.00	180.00	4.20	8.00	5.60	83.9%	17	36
18	5	78.8%	93.35	82.20	87.50	185.00	4.50	8.60	8.76	81.5%	40	74
10	2	83.6%	88.35	78.00	86.20	190.00	4.70	9.90	9.86	80.1%	40	69
0	1	—	74.00	0.00	0.00	195.00	6.30	8.90	10.00	76.8%	6	29
60	13	81.4%	93.00	70.00	78.10	200.00	7.70	9.90	9.60	76.7%	110	239
99	1	81.0%	78.00	63.00	70.80	210.00	10.10	13.10	12.20	76.7%	1	117
68	2	80.3%	48.80	56.10	64.10	220.00	13.00	16.40	15.41	76.2%	1	79
134	1	78.3%	76.79	50.00	56.40	230.00	15.90	19.60	20.00	74.3%	2	53
101	2	80.1%	49.50	45.80	50.80	240.00	19.00	24.20	19.20	73.4%	1	44
789	6	78.8%	41.78	40.50	44.70	250.00	24.40	29.70	20.80	75.1%	1	153
572	560	79.4%	37.08	36.10	40.20	260.00	29.10	35.40	28.90	75.0%	1	38
SIMO $263.90
512	6	80.0%	35.02	30.90	37.40	270.00	35.40	40.60	35.90	75.1%	4	76
140	1	78.8%	27.90	27.90	31.60	280.00	43.40	47.50	46.23	78.0%	1	12
48	16	80.0%	24.00	23.50	30.20	290.00	47.10	54.80	52.50	75.7%	1	12
339	150	76.1%	23.00	19.10	24.80	300.00	54.30	61.20	52.63	75.4%	2	20
201	4	78.1%	21.96	16.30	23.90	310.00	60.60	68.10	56.75	73.9%	2	8
139	5	78.0%	17.30	14.90	20.30	320.00	70.30	75.60	58.48	76.3%	2	6
65	3	79.2%	14.40	12.30	19.50	330.00	77.40	83.40	65.13	75.3%	2	7
176	4	77.5%	22.30	11.50	15.10	340.00	85.50	92.90	92.70	77.0%	2	54
107	1	78.9%	11.40	9.40	14.90	350.00	94.40	101.20	88.30	77.7%	1	26
43	1	79.4%	10.50	7.40	14.20	360.00	101.40	109.60	98.29	75.4%	2	3
524	532	81.7%	8.90	8.10	12.40	370.00	137.30	144.00	115.43	141.0%	1	3
79	1	77.7%	14.80	6.10	9.40	380.00	—	—	—	—	—	—
111	3	77.9%	7.30	5.10	8.50	390.00	0.00	0.00	147.60	—	—	0
256	4	78.9%	7.00	4.60	7.80	400.00	162.00	169.60	163.20	142.2%	1	2
23	6	77.9%	9.10	3.80	6.50	410.00	171.00	178.50	172.30	143.5%	—	1
42	2	85.3%	8.20	3.10	9.50	420.00	—	—	—	—	—	—
206	1	83.6%	7.10	2.75	7.60	430.00	171.00	179.20	201.90	97.8%	2	2
54	1	87.4%	8.40	1.95	8.90	440.00	—	—	—	—	—	—
16	20	82.8%	6.30	1.40	6.30	450.00	—	—	—	—	—	—
0	102	25.0%	14.30	0.00	0.00	460.00	—	—	—	—	—	—
95	1	84.8%	4.30	1.10	5.60	470.00	—	—	—	—	—	—
0	1	25.0%	8.90	0.00	0.00	480.00	235.80	243.50	215.70	153.3%	1	1
0	—	25.0%	15.98	0.00	0.00	490.00	—	—	—	—	—	—
29	4	86.9%	6.00	0.85	4.40	500.00	—	—	—	—	—	—
143	2	84.5%	1.76	0.55	3.00	520.00	—	—	—	—	—	—

In-the-money callsIn-the-money puts. IV = implied volatility, OI = open interest (contracts). Each contract covers 100 shares. Quotes delayed at least 15 minutes.

Frequently asked questions

What is the SIMO put/call ratio?

For the December 18, 2026 expiration, the SIMO put/call ratio based on open interest is 0.36 (1,979 puts vs 5,458 calls), and 0.21 based on today's volume. A ratio above 1 means more puts than calls.

What is SIMO's implied volatility?

At-the-money implied volatility for SIMO options expiring December 18, 2026 is about 77.2%, an annualized estimate of how much the market expects Silicon Motion Technology stock to move.

How many SIMO option expiration dates are there?

SIMO has 8 listed expiration dates, from Oct 16, 2026 to Jan 19, 2029.

What does "in the money" mean?

A call is in the money when the strike price is below the current share price; a put is in the money when the strike is above it. In-the-money contracts have intrinsic value and are shaded in the table.