Transdigm Group (TDG) Options Chain

NYSE: TDGIndustrialsMilitary/Government/TechnicalUSD

1,107.99+18.69 (+1.72%)

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

Expiration date

Expiration: Dec 18, 2026
Days to expiration: 68
Share price: $1,107.99
Put/call ratio (OI): 0.84
Put/call ratio (volume): 0.74
ATM implied volatility: 34.4%
Expected move: ±$164.30
Open interest (C / P): 657 / 549

TDG options summary

The TDG options chain for the December 18, 2026 expiration lists 57 call and 53 put contracts, with 68 days until expiration. Open interest stands at 657 calls and 549 puts, a put/call ratio of 0.84, which is fairly balanced between calls and puts. At-the-money implied volatility near the $1,100.00 strike is 34.4%, which implies the market expects a move of about ±$164.30 (14.8%) in Transdigm Group stock by expiration.

The most open interest sits at the $1,380.00 call (123 contracts) and the $900.00 put (112 contracts).

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

TDG options chain · December 18, 2026

TDG 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	—	76.8%	483.20	469.50	478.20	640.00	—	—	—	—	—	—
3	1	75.2%	473.20	459.60	468.30	650.00	0.00	7.30	1.80	68.5%	1	2
—	—	—	—	—	—	660.00	0.00	7.30	1.30	66.8%	1	1
1	—	70.1%	434.20	420.20	429.50	690.00	—	—	—	—	—	—
—	—	—	—	—	—	720.00	1.00	11.00	8.80	63.0%	1	4
—	—	—	—	—	—	740.00	4.00	12.00	4.90	63.6%	1	3
—	—	—	—	—	—	760.00	0.00	4.90	1.69	54.0%	5	7
1	—	57.8%	347.20	332.00	341.20	780.00	0.00	0.00	2.67	12.5%	17	0
—	—	—	—	—	—	800.00	0.05	8.20	4.10	53.9%	1	22
1	—	107.5%	490.00	352.90	360.90	820.00	6.80	16.00	18.16	55.2%	12	7
1	—	187.7%	433.40	454.00	464.00	840.00	13.00	21.10	14.50	58.4%	2	11
—	—	—	—	—	—	860.00	0.55	9.30	6.50	45.7%	1	17
2	—	51.2%	231.50	239.00	245.10	880.00	—	—	—	—	—	—
0	1	90.3%	382.00	277.90	284.70	900.00	3.00	10.70	7.80	41.0%	1	112
1	1	127.8%	295.00	323.00	332.60	920.00	5.00	12.50	8.90	39.7%	1	3
1	—	82.8%	398.00	241.80	248.20	940.00	7.40	14.70	11.07	38.5%	1	13
1	—	80.0%	380.00	224.30	233.00	960.00	9.70	17.30	13.91	37.3%	1	11
1	—	152.0%	292.60	336.00	341.60	980.00	14.40	20.50	22.33	36.3%	1	2
2	1	40.8%	133.50	134.30	140.60	1,000.00	17.80	24.40	23.51	35.4%	1	40
3	—	40.1%	119.40	119.00	126.10	1,020.00	23.20	29.00	32.48	34.5%	1	17
3	2	39.3%	135.10	102.70	112.00	1,040.00	25.90	35.00	37.40	34.0%	1	19
2	—	38.5%	121.10	89.10	98.80	1,060.00	32.30	41.90	32.43	33.5%	1	12
2	1	37.5%	78.40	76.60	86.00	1,080.00	39.70	49.00	59.50	32.7%	36	41
38	33	36.9%	68.20	65.00	74.60	1,100.00	48.20	57.00	66.65	31.8%	2	21
TDG $1,107.99
46	52	35.9%	58.50	55.80	63.50	1,120.00	58.70	65.60	77.65	30.8%	2	14
6	2	34.4%	50.00	46.30	52.30	1,140.00	69.50	76.30	81.10	30.3%	4	5
17	2	35.0%	38.49	38.00	45.80	1,160.00	80.60	88.10	94.82	29.8%	1	32
8	1	33.9%	33.34	31.00	37.20	1,180.00	93.60	103.00	100.82	30.4%	1	3
23	1	35.1%	28.00	24.00	33.60	1,200.00	108.00	117.50	97.20	30.4%	9	96
8	2	51.0%	144.60	52.00	60.40	1,220.00	123.00	132.70	136.00	30.3%	1	7
13	5	35.4%	16.00	15.00	24.40	1,240.00	139.10	148.80	135.75	30.3%	1	4
10	1	35.7%	14.91	11.20	21.00	1,260.00	0.00	0.00	91.10	—	2	0
13	1	36.0%	11.00	8.60	18.00	1,280.00	0.00	0.00	103.50	—	1	0
20	2	36.0%	9.10	6.10	15.00	1,300.00	0.00	0.00	142.98	—	1	0
39	41	36.5%	16.70	4.20	13.00	1,320.00	210.20	219.00	213.00	30.5%	2	3
13	1	36.6%	8.26	2.50	11.00	1,340.00	159.40	169.00	103.80	—	1	8
13	1	37.5%	19.15	1.10	10.00	1,360.00	174.80	184.00	113.50	—	1	6
123	1	39.1%	15.53	0.05	9.70	1,380.00	0.00	0.00	173.95	—	1	0
17	1	40.3%	2.75	2.85	9.20	1,400.00	0.00	0.00	198.90	—	1	0
5	1	36.3%	22.40	0.00	4.90	1,420.00	0.00	0.00	188.30	—	—	0
5	1	54.0%	28.40	15.20	24.00	1,440.00	0.00	0.00	226.35	—	1	0
2	1	53.4%	25.60	12.70	21.00	1,460.00	0.00	0.00	256.03	—	—	0
11	1	38.0%	1.70	0.05	3.40	1,480.00	254.00	264.00	286.60	—	1	0
50	2	52.7%	70.00	8.60	17.00	1,500.00	271.00	281.00	268.00	—	1	0
0	—	12.5%	14.00	0.00	0.00	1,520.00	237.00	245.50	171.45	—	14	6
2	1	60.0%	48.20	13.40	20.00	1,540.00	—	—	—	—	—	—
2	1	59.3%	43.00	11.00	18.00	1,560.00	266.00	274.40	196.66	—	—	0
5	1	58.6%	38.90	9.00	16.00	1,580.00	—	—	—	—	—	—
20	3	51.0%	30.90	1.95	10.00	1,600.00	—	—	—	—	—	—
7	1	50.4%	1.00	0.00	4.90	1,620.00	—	—	—	—	—	—
29	1	57.1%	22.00	4.20	12.00	1,640.00	402.00	412.00	384.70	—	—	0
1	1	89.6%	67.02	36.00	44.90	1,660.00	493.30	501.20	408.20	—	—	0
1	1	73.8%	20.00	15.00	24.80	1,680.00	513.30	521.20	438.50	—	—	0
17	1	54.0%	12.30	0.00	8.60	1,700.00	533.30	541.20	450.20	—	—	0
—	—	—	—	—	—	1,720.00	553.30	561.20	478.60	—	—	0
0	1	25.0%	4.00	0.00	0.00	1,740.00	—	—	—	—	—	—
2	1	58.3%	7.15	0.05	9.40	1,760.00	—	—	—	—	—	—
0	1	25.0%	22.24	0.00	0.00	1,780.00	—	—	—	—	—	—
11	1	54.4%	0.10	0.00	4.90	1,800.00	—	—	—	—	—	—
1	2	59.1%	7.80	0.00	7.40	1,820.00	—	—	—	—	—	—
—	—	—	—	—	—	1,940.00	773.30	781.20	698.20	—	—	0
1	—	61.9%	2.50	0.00	4.80	1,960.00	602.00	612.00	606.00	—	5	0
1	1	63.1%	2.50	0.00	5.00	1,980.00	—	—	—	—	—	—
14	1	67.3%	0.50	0.00	7.00	2,000.00	—	—	—	—	—	—
—	—	—	—	—	—	2,020.00	853.30	861.20	778.60	—	—	0
—	—	—	—	—	—	2,040.00	873.30	881.20	790.20	—	—	0
—	—	—	—	—	—	2,060.00	893.30	901.20	818.60	—	—	0
37	10	60.1%	0.05	0.00	1.35	2,160.00	—	—	—	—	—	—

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 TDG put/call ratio?

For the December 18, 2026 expiration, the TDG put/call ratio based on open interest is 0.84 (549 puts vs 657 calls), and 0.74 based on today's volume. A ratio above 1 means more puts than calls.

What is TDG's implied volatility?

At-the-money implied volatility for TDG options expiring December 18, 2026 is about 34.4%, an annualized estimate of how much the market expects Transdigm Group stock to move.

How many TDG option expiration dates are there?

TDG 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.