Monolithic Power Systems (MPWR) Options Chain

NASDAQ: MPWRTechnologySemiconductorsUSD

1,386.29+16.49 (+1.20%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 69
Share price: $1,386.29
Put/call ratio (OI): 1.40
Put/call ratio (volume): 0.72
ATM implied volatility: 46.6%
Expected move: ±$280.61
Open interest (C / P): 489 / 687

MPWR options summary

The MPWR options chain for the December 18, 2026 expiration lists 105 call and 99 put contracts, with 69 days until expiration. Open interest stands at 489 calls and 687 puts, a put/call ratio of 1.40, which is more bearish, with puts outnumbering calls. At-the-money implied volatility near the $1,390.00 strike is 46.6%, which implies the market expects a move of about ±$280.61 (20.2%) in Monolithic Power Systems stock by expiration.

The most open interest sits at the $1,450.00 call (65 contracts) and the $1,310.00 put (63 contracts).

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

MPWR options chain · December 18, 2026

MPWR 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
2	1	113.0%	609.50	832.30	850.00	550.00	0.00	4.90	1.40	101.3%	1	35
1	—	361.8%	1,096.00	1,024.80	1,041.30	560.00	0.00	4.90	1.50	99.5%	1	5
1	—	358.9%	1,071.80	1,018.30	1,034.00	570.00	0.00	4.90	1.50	97.7%	1	1
—	—	—	—	—	—	580.00	0.00	4.90	2.10	95.9%	1	2
—	—	—	—	—	—	590.00	0.00	4.90	2.00	94.2%	1	1
1	1	323.4%	966.00	970.00	984.90	600.00	1.80	5.40	12.46	98.2%	1	2
—	—	—	—	—	—	610.00	0.00	0.00	4.10	25.0%	2	0
—	—	—	—	—	—	620.00	7.90	22.10	10.71	125.0%	—	1
0	—	99.3%	736.45	753.20	770.00	630.00	—	—	—	—	—	—
2	2	—	660.80	578.00	590.90	650.00	0.00	4.90	3.48	84.4%	3	4
2	—	—	652.10	568.30	581.30	660.00	—	—	—	—	—	—
2	—	—	643.00	558.70	571.70	670.00	—	—	—	—	—	—
2	—	—	635.10	547.90	562.10	680.00	0.00	4.90	2.10	79.8%	1	1
2	—	—	626.80	538.30	552.60	690.00	0.00	4.90	2.20	78.3%	1	2
—	—	—	—	—	—	710.00	0.00	4.90	4.20	75.4%	—	1
2	—	—	585.50	491.10	505.30	740.00	—	—	—	—	—	—
2	—	—	577.40	482.00	496.00	750.00	0.00	4.90	8.00	69.8%	1	5
2	—	—	569.00	472.70	486.70	760.00	0.00	4.90	9.85	68.5%	—	1
0	1	—	626.00	0.00	0.00	770.00	—	—	—	—	—	—
5	—	—	553.90	454.00	469.80	780.00	0.00	4.90	3.94	65.8%	1	3
2	1	—	578.80	512.00	527.10	790.00	—	—	—	—	—	—
—	—	—	—	—	—	800.00	0.00	4.90	4.60	63.3%	5	14
—	—	—	—	—	—	810.00	24.10	33.40	21.00	105.9%	2	2
—	—	—	—	—	—	820.00	0.05	4.90	11.10	60.8%	—	1
—	—	—	—	—	—	830.00	0.05	13.10	5.00	71.0%	5	5
—	—	—	—	—	—	840.00	0.05	6.10	9.75	60.5%	2	7
—	—	—	—	—	—	850.00	29.10	40.00	21.50	104.2%	—	1
1	1	—	486.59	443.60	458.40	870.00	0.00	0.00	19.00	25.0%	—	0
—	—	—	—	—	—	880.00	0.90	13.70	23.95	65.5%	2	28
—	—	—	—	—	—	890.00	0.05	13.50	25.70	63.1%	4	30
—	—	—	—	—	—	900.00	0.10	13.70	6.44	62.0%	5	13
—	—	—	—	—	—	910.00	1.75	9.90	9.75	58.6%	1	2
—	—	—	—	—	—	920.00	0.50	17.10	14.40	62.6%	1	0
55	—	69.2%	318.00	462.30	479.50	930.00	0.10	11.70	10.82	56.2%	—	1
2	—	222.2%	657.40	678.30	693.50	940.00	0.70	12.90	14.72	56.6%	1	1
—	—	—	—	—	—	950.00	3.40	13.20	9.70	57.8%	2	3
2	1	—	510.10	370.80	386.20	960.00	0.00	0.00	46.97	12.5%	1	0
0	1	—	296.00	0.00	0.00	970.00	—	—	6.84	—	—	—
2	2	214.7%	679.25	647.40	662.50	980.00	2.35	19.90	29.00	57.8%	1	2
—	—	—	—	—	—	990.00	3.40	19.00	9.90	56.5%	1	7
2	2	211.1%	663.60	632.30	646.70	1,000.00	7.20	16.00	13.78	55.7%	1	44
2	1	64.7%	308.80	389.70	406.00	1,010.00	—	—	—	—	—	—
—	—	—	—	—	—	1,020.00	7.20	20.50	49.10	55.5%	1	2
1	1	206.3%	612.40	610.40	624.60	1,030.00	8.30	24.80	18.80	57.0%	2	5
—	—	—	—	—	—	1,040.00	9.00	26.00	11.23	56.5%	1	7
—	—	—	—	—	—	1,050.00	10.00	26.60	15.73	55.8%	2	11
2	1	210.0%	648.50	604.30	617.10	1,060.00	11.80	28.90	34.60	56.3%	2	2
1	—	—	432.00	294.50	305.80	1,070.00	13.40	30.00	86.10	56.0%	1	4
1	—	62.0%	155.70	329.30	346.00	1,080.00	15.00	32.00	23.60	56.0%	1	23
—	—	—	—	—	—	1,090.00	16.10	33.80	17.37	55.6%	2	3
6	4	127.4%	472.65	429.90	444.00	1,100.00	18.50	31.70	28.00	54.3%	1	9
0	1	—	507.85	0.00	0.00	1,110.00	20.40	37.10	94.30	55.5%	1	2
0	—	—	548.00	0.00	0.00	1,120.00	22.00	39.90	63.90	55.5%	2	5
—	—	—	—	—	—	1,130.00	24.00	41.00	44.92	55.0%	—	1
1	1	60.4%	204.00	281.60	298.00	1,140.00	26.00	44.00	29.50	55.1%	1	2
3	2	60.3%	277.52	274.70	290.00	1,150.00	29.60	46.00	122.33	55.3%	1	51
8	14	59.8%	136.09	266.70	282.00	1,160.00	31.20	48.00	33.12	54.8%	3	5
5	7	60.0%	132.54	259.30	276.00	1,170.00	34.70	50.00	121.96	54.8%	2	9
7	1	59.6%	143.00	252.00	268.00	1,180.00	36.90	53.90	49.04	55.0%	3	7
—	—	—	—	—	—	1,190.00	39.80	56.00	69.70	54.7%	2	4
3	1	59.3%	114.00	237.70	254.00	1,200.00	42.00	58.00	44.39	54.2%	1	58
2	—	58.8%	146.37	230.50	246.00	1,210.00	45.50	62.00	159.20	54.5%	1	2
6	8	58.8%	144.46	223.50	240.00	1,220.00	48.00	64.00	45.20	53.9%	1	23
5	3	58.5%	136.80	217.60	232.00	1,230.00	53.90	68.00	47.70	54.7%	1	32
11	6	58.4%	142.67	210.70	226.00	1,240.00	54.40	71.90	131.10	54.0%	7	5
1	—	185.1%	513.10	477.20	489.50	1,250.00	58.80	74.00	62.20	53.8%	10	27
1	—	178.7%	479.90	458.50	473.40	1,260.00	64.40	78.00	60.30	54.3%	1	6
3	2	58.2%	126.40	191.70	208.00	1,270.00	66.20	82.00	93.65	53.8%	1	5
13	2	58.1%	161.00	185.60	201.90	1,280.00	—	—	—	—	—	—
1	—	58.0%	179.80	179.60	196.00	1,290.00	0.00	0.00	180.10	3.1%	2	0
6	1	57.8%	125.92	173.70	190.00	1,300.00	78.00	94.00	74.90	53.5%	2	8
2	1	57.7%	175.00	168.40	184.00	1,310.00	83.00	98.00	112.60	53.6%	1	63
2	6	57.4%	150.40	162.40	178.00	1,320.00	86.90	102.00	125.40	53.3%	1	19
5	2	57.2%	157.48	156.80	172.00	1,330.00	91.90	108.00	133.00	53.7%	1	13
1	—	56.6%	143.40	151.90	164.00	1,340.00	100.30	112.00	152.20	54.3%	1	4
9	1	57.1%	147.40	146.60	161.80	1,350.00	103.60	116.00	140.00	53.7%	1	6
5	2	56.9%	155.68	141.40	156.00	1,360.00	109.50	122.00	145.00	54.1%	1	3
1	—	57.0%	134.31	136.20	152.00	1,370.00	111.30	126.00	141.31	53.1%	1	2
1	1	56.9%	134.00	130.90	147.90	1,380.00	—	—	—	—	—	—
MPWR $1,386.29
2	1	39.8%	309.00	76.00	93.90	1,390.00	122.00	137.80	96.40	53.3%	1	2
3	2	56.7%	101.90	121.90	138.00	1,400.00	127.00	142.00	128.75	52.9%	2	3
2	1	56.6%	124.10	117.00	134.00	1,410.00	—	—	—	—	—	—
4	1	56.7%	137.50	112.90	130.00	1,420.00	—	—	—	—	—	—
—	—	—	—	—	—	1,430.00	0.00	0.00	256.80	—	—	0
—	—	—	151.04	—	—	1,440.00	0.00	0.00	226.20	—	—	0
65	1	56.6%	115.85	100.50	118.00	1,450.00	—	—	—	—	—	—
2	2	56.1%	151.52	96.10	112.70	1,460.00	161.70	178.00	141.09	52.7%	15	7
1	1	56.3%	143.80	92.50	110.00	1,470.00	168.30	184.00	146.40	52.6%	1	2
1	1	161.9%	298.00	342.30	356.10	1,480.00	—	—	138.45	—	—	—
0	1	118.5%	354.17	234.70	252.00	1,490.00	288.00	302.80	335.31	97.0%	—	1
6	1	56.2%	92.00	85.80	95.60	1,500.00	—	—	—	—	—	—
0	1	3.1%	178.20	0.00	0.00	1,520.00	—	—	—	—	—	—
2	1	56.1%	89.23	69.30	86.90	1,540.00	326.00	339.00	372.00	98.6%	3	0
2	1	56.3%	92.30	65.90	80.00	1,560.00	340.00	351.40	380.60	98.4%	3	2
16	1	55.8%	69.60	62.50	70.40	1,580.00	—	—	—	—	—	—
16	6	56.4%	69.63	53.80	72.00	1,600.00	—	—	—	—	—	—
7	2	55.9%	59.50	53.40	60.90	1,620.00	317.30	332.00	298.00	71.3%	—	1
2	2	55.6%	55.50	47.80	56.70	1,640.00	432.00	447.20	451.10	114.0%	—	1
11	5	56.3%	66.00	41.40	58.00	1,660.00	340.70	356.00	357.09	68.3%	1	1
1	—	56.4%	30.00	39.90	52.10	1,680.00	—	—	—	—	—	—
6	10	56.6%	40.27	33.90	52.00	1,700.00	468.00	481.70	385.00	110.3%	—	1
1	—	150.8%	245.80	245.60	260.00	1,720.00	—	—	—	—	—	—
13	1	66.0%	124.55	46.00	62.20	1,740.00	486.30	499.70	476.30	105.2%	—	4
12	—	66.2%	160.40	42.00	60.00	1,760.00	—	—	—	—	—	—
1	1	66.8%	139.80	40.00	57.70	1,780.00	—	—	—	—	—	—
17	2	57.2%	31.10	21.10	38.00	1,800.00	—	—	—	—	—	—
8	14	57.3%	35.00	14.40	32.00	1,860.00	594.00	609.40	494.00	111.5%	1	2
2	1	57.5%	29.70	13.40	30.00	1,880.00	—	—	—	—	—	—
4	2	57.1%	12.00	11.00	28.00	1,900.00	—	—	—	—	—	—
2	1	57.9%	26.00	10.00	27.80	1,920.00	—	—	—	—	—	—
0	—	12.5%	76.60	0.00	0.00	1,940.00	554.60	571.60	718.00	50.1%	1	2
1	—	55.6%	89.50	5.20	19.60	1,980.00	—	—	—	—	—	—
5	8	56.6%	18.10	4.50	19.90	2,000.00	—	—	—	—	—	—
2	1	143.7%	189.55	158.90	176.00	2,040.00	810.70	825.00	774.00	142.2%	—	0
1	1	59.0%	15.20	2.85	19.90	2,060.00	—	—	—	—	—	—
36	30	59.1%	13.00	2.05	19.10	2,080.00	—	—	—	—	—	—
2	2	59.2%	12.50	0.90	18.70	2,100.00	636.30	652.20	595.80	—	—	1
1	1	139.8%	126.00	134.70	149.60	2,140.00	—	—	—	—	—	—
1	2	61.7%	8.50	1.10	15.00	2,200.00	—	—	—	—	—	—
1	1	63.2%	9.50	0.05	16.90	2,220.00	989.90	1,004.20	936.00	154.7%	—	0
—	—	—	—	—	—	2,240.00	749.20	765.30	706.20	—	—	1
2	—	68.5%	10.20	2.00	20.00	2,260.00	—	—	—	—	—	—
—	—	—	—	—	—	2,280.00	1,048.20	1,064.00	976.00	158.2%	—	0
0	—	25.0%	149.85	0.00	0.00	2,300.00	1,068.20	1,084.00	1,010.00	159.5%	1	0
1	1	66.9%	4.80	0.05	15.90	2,320.00	926.00	942.80	982.00	68.7%	1	0
2	1	67.7%	1.90	0.05	15.80	2,340.00	—	—	—	—	—	—
1	1	65.7%	4.50	0.05	12.40	2,360.00	0.00	0.00	854.00	—	1	0
6	1	69.1%	5.10	0.05	15.40	2,380.00	—	—	—	—	—	—
1	1	74.1%	67.04	4.20	16.90	2,400.00	0.00	0.00	888.00	—	—	0
1	1	66.1%	4.40	0.05	9.70	2,440.00	1,106.00	1,120.50	963.50	115.9%	1	2
2	1	65.8%	4.30	0.05	8.70	2,460.00	0.00	0.00	907.60	—	—	0
7	1	72.8%	3.55	0.05	15.00	2,480.00	1,107.90	1,124.00	1,018.40	90.6%	—	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 MPWR put/call ratio?

For the December 18, 2026 expiration, the MPWR put/call ratio based on open interest is 1.40 (687 puts vs 489 calls), and 0.72 based on today's volume. A ratio above 1 means more puts than calls.

What is MPWR's implied volatility?

At-the-money implied volatility for MPWR options expiring December 18, 2026 is about 46.6%, an annualized estimate of how much the market expects Monolithic Power Systems stock to move.

How many MPWR option expiration dates are there?

MPWR has 10 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.