SiTime (SITM) Options Chain

NASDAQ: SITMTechnologySemiconductorsUSD

612.37-32.69 (-5.07%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $612.37
Put/call ratio (OI): 1.78
Put/call ratio (volume): 1.60
ATM implied volatility: 75.8%
Expected move: ±$200.40
Open interest (C / P): 860 / 1.53K

SITM options summary

The SITM options chain for the December 18, 2026 expiration lists 75 call and 63 put contracts, with 68 days until expiration. Open interest stands at 860 calls and 1,528 puts, a put/call ratio of 1.78, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $610.00 strike is 75.8%, which implies the market expects a move of about ±$200.40 (32.7%) in SiTime stock by expiration.

The most open interest sits at the $1,100.00 call (246 contracts) and the $720.00 put (461 contracts).

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

SITM options chain · December 18, 2026

SITM 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
—	—	—	—	—	—	250.00	0.00	4.90	0.38	112.4%	4	9
—	—	—	—	—	—	260.00	0.00	4.90	5.51	107.9%	—	2
1	1	100.2%	325.75	334.80	354.00	270.00	0.20	10.20	14.02	120.2%	—	1
—	—	—	—	—	—	280.00	0.00	0.00	5.10	25.0%	1	0
1	—	115.9%	215.28	320.80	336.60	290.00	0.00	0.00	5.90	25.0%	1	0
—	—	—	—	—	—	300.00	0.00	4.90	3.80	91.6%	4	5
—	—	—	—	—	—	310.00	0.00	0.00	10.00	25.0%	—	0
1	1	—	399.80	258.00	273.90	330.00	0.00	4.90	1.63	80.7%	1	1
—	—	—	—	—	—	340.00	0.85	8.80	1.98	88.8%	1	4
—	—	—	—	—	—	350.00	0.10	10.10	2.50	86.2%	2	3
—	—	—	—	—	—	360.00	0.10	10.10	2.15	82.5%	13	5
—	—	—	—	—	—	370.00	0.20	10.20	8.65	79.3%	5	9
5	—	84.7%	186.27	230.90	250.00	380.00	15.00	24.80	41.47	111.9%	1	1
2	2	103.0%	156.50	234.00	246.10	390.00	1.60	11.60	2.95	76.8%	10	7
—	—	—	—	—	—	400.00	2.75	12.70	3.54	76.5%	1	41
—	—	—	—	—	—	410.00	4.10	14.10	6.30	76.4%	1	9
7	1	82.1%	200.10	199.80	211.70	420.00	48.00	56.00	55.59	144.0%	1	1
0	1	66.3%	305.15	182.60	197.80	430.00	7.20	17.20	10.64	75.9%	1	3
3	2	156.4%	289.78	234.50	248.80	440.00	8.80	18.80	12.00	75.3%	2	4
1	1	80.3%	167.61	173.20	189.20	450.00	10.70	20.70	7.45	75.0%	9	21
0	1	80.8%	264.00	166.00	182.00	460.00	13.60	23.60	22.50	76.0%	1	9
0	—	80.2%	125.00	159.10	173.60	470.00	—	—	—	—	—	—
0	1	79.1%	179.75	151.70	165.20	480.00	20.90	29.30	25.00	77.8%	1	2
3	2	78.8%	119.28	144.50	158.10	490.00	24.80	33.10	25.00	78.9%	1	8
3	1	78.6%	231.18	137.60	151.20	500.00	26.40	36.10	29.65	77.7%	11	16
1	—	83.0%	253.60	134.00	149.00	510.00	27.70	37.70	19.17	75.2%	2	2
8	1	78.2%	159.85	124.80	137.50	520.00	31.30	41.30	34.43	75.3%	1	7
0	2	97.0%	135.20	134.90	149.20	530.00	36.70	46.60	25.85	77.0%	1	4
5	1	77.7%	89.60	110.70	126.70	540.00	38.60	48.60	29.33	74.7%	10	123
7	2	76.9%	140.20	104.30	120.30	550.00	43.60	53.60	32.45	75.5%	10	62
7	3	78.8%	114.00	100.60	116.60	560.00	47.90	57.90	32.28	75.4%	2	32
6	—	75.8%	83.80	95.50	105.20	570.00	53.80	63.70	51.58	76.6%	1	26
7	1	75.2%	92.60	89.70	99.60	580.00	58.20	67.50	32.87	75.8%	3	13
0	3	—	126.68	0.00	0.00	590.00	63.40	72.40	51.05	75.7%	2	55
16	1	76.0%	84.40	81.00	90.80	600.00	68.40	78.00	55.12	75.7%	2	9
9	1	76.0%	125.80	76.40	86.30	610.00	73.70	83.70	79.00	75.7%	2	56
SITM $612.37
4	1	76.3%	63.00	72.50	82.40	620.00	79.70	89.70	48.20	76.0%	1	12
4	2	76.7%	75.40	68.70	78.70	630.00	—	—	—	—	—	—
0	1	1.6%	235.00	0.00	0.00	640.00	—	—	—	—	—	—
9	1	79.5%	66.40	65.50	72.60	650.00	97.90	107.90	90.00	75.9%	1	2
13	5	79.1%	88.30	60.10	70.10	660.00	—	—	—	—	—	—
21	2	78.3%	47.47	55.80	65.80	670.00	106.90	122.90	99.80	74.9%	1	1
25	2	79.3%	45.20	53.60	63.60	680.00	114.10	130.00	74.70	75.3%	1	16
22	1	78.4%	89.70	49.60	59.60	690.00	203.30	219.40	166.06	153.2%	—	1
32	1	79.4%	72.50	47.70	57.70	700.00	127.80	143.80	100.00	75.0%	1	459
8	1	79.0%	72.00	44.50	54.50	710.00	134.50	150.50	89.15	74.5%	13	6
5	1	78.9%	45.00	41.70	51.70	720.00	142.00	158.00	122.22	74.6%	2	461
17	2	78.9%	89.00	39.20	49.20	730.00	0.00	0.00	121.80	—	—	0
8	1	78.7%	97.30	36.60	46.60	740.00	0.00	0.00	127.30	—	2	0
9	1	78.1%	45.40	34.20	43.20	750.00	165.80	181.80	154.80	75.5%	1	4
0	—	12.5%	158.80	0.00	0.00	760.00	0.00	0.00	141.40	—	—	0
3	2	79.9%	46.10	31.20	41.20	770.00	0.00	0.00	145.68	—	—	0
—	—	—	—	—	—	780.00	0.00	0.00	150.70	—	—	0
38	1	80.2%	70.00	25.80	35.80	800.00	284.20	300.60	219.43	153.5%	1	1
3	1	80.6%	39.40	24.50	34.50	810.00	—	—	—	—	—	—
5	1	80.3%	30.60	22.60	32.60	820.00	—	—	—	—	—	—
3	1	79.4%	46.30	20.40	30.40	830.00	—	—	—	—	—	—
130	1	79.2%	55.60	18.80	28.80	840.00	—	—	—	—	—	—
5	1	80.9%	21.40	19.70	27.90	850.00	254.50	273.00	406.59	83.8%	1	1
2	1	80.3%	36.17	17.00	27.00	860.00	257.70	274.00	188.00	75.3%	1	1
1	—	147.7%	111.50	79.70	88.00	870.00	—	—	—	—	—	—
1	—	79.8%	30.20	14.30	24.30	880.00	—	—	—	—	—	—
73	1	80.6%	19.90	12.70	22.70	900.00	—	—	—	—	—	—
0	—	12.5%	124.80	0.00	0.00	910.00	—	—	—	—	—	—
3	2	79.5%	25.00	10.10	20.10	920.00	—	—	—	—	—	—
3	1	78.6%	36.23	8.70	18.70	930.00	—	—	—	—	—	—
1	1	95.4%	62.60	19.60	29.00	940.00	—	—	—	—	—	—
5	1	82.9%	15.00	9.70	19.70	950.00	374.30	392.80	410.90	122.7%	—	1
1	—	94.8%	26.40	16.80	26.80	960.00	—	—	—	—	—	—
—	—	—	—	—	—	970.00	393.00	407.50	428.00	122.0%	—	1
0	1	25.0%	28.00	0.00	0.00	980.00	—	—	—	—	—	—
2	—	79.3%	18.00	4.90	14.90	990.00	—	—	—	—	—	—
3	2	76.5%	3.05	4.00	12.00	1,000.00	424.10	431.90	440.80	123.6%	1	1
1	—	78.7%	7.79	3.00	13.00	1,020.00	—	—	—	—	—	—
6	—	81.3%	16.70	3.20	13.20	1,040.00	—	—	—	—	—	—
22	3	82.2%	6.85	5.30	11.00	1,050.00	0.00	0.00	383.40	—	—	0
1	1	72.7%	15.20	0.65	7.80	1,060.00	—	—	—	—	—	—
4	1	82.8%	12.40	2.50	12.50	1,070.00	486.40	504.00	501.80	129.4%	—	1
1	1	83.3%	11.80	2.30	12.30	1,080.00	—	—	—	—	—	—
246	1	78.2%	12.50	0.05	9.50	1,100.00	515.30	532.50	543.30	131.4%	1	2
3	2	72.8%	4.40	0.05	6.00	1,110.00	524.90	542.00	552.30	132.0%	1	3
1	—	96.7%	18.70	6.70	16.50	1,120.00	534.30	551.70	561.40	132.6%	1	1
1	—	98.5%	18.20	7.10	16.90	1,130.00	—	—	—	—	—	—
0	1	84.0%	8.10	0.50	10.50	1,140.00	553.60	571.00	579.50	134.0%	—	1
0	1	96.2%	35.10	5.00	14.90	1,150.00	—	—	—	—	—	—
2	1	93.8%	21.40	3.50	13.50	1,160.00	—	—	—	—	—	—
0	1	86.3%	8.50	0.40	10.40	1,170.00	584.60	596.60	606.90	135.1%	—	1
20	4	77.0%	3.00	0.05	5.30	1,180.00	594.30	605.10	616.10	134.9%	—	1

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 SITM put/call ratio?

For the December 18, 2026 expiration, the SITM put/call ratio based on open interest is 1.78 (1,528 puts vs 860 calls), and 1.60 based on today's volume. A ratio above 1 means more puts than calls.

What is SITM's implied volatility?

At-the-money implied volatility for SITM options expiring December 18, 2026 is about 75.8%, an annualized estimate of how much the market expects SiTime stock to move.

How many SITM option expiration dates are there?

SITM has 6 listed expiration dates, from Oct 16, 2026 to Dec 17, 2027.

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.