TNDM · Option chain

TNDM Option Chain

Every listed TNDM strike within 25% of spot, across the next 5 expirations — calls and puts side by side with last price, volume and open interest, plus the closing bid and ask.

Open interest and pricing as of the close on 2026-09-03. Recomputed every morning before the open.

Spot

$20.43

Call open interest

4,658

Put open interest

720

Put/call (volume)

0.22

44 contracts changed hands across these expirations — 36 calls against 8 puts. Calls outtraded puts 4.50 to one.

Sep 18, 202613 days

call OI 1,035 · put OI 311

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	3.40 / 6.30	—	18	16	—	0.00 / 0.75	—	3
—	2.45 / 5.50	—	—	17	—	0.00 / 0.95	—	1
—	1.80 / 3.90	—	6	18	—	0.00 / 1.15	—	8
—	1.05 / 3.60	—	52	19	—	0.00 / 2.45	—	29
—	0.30 / 3.00	—	152	20	0.60	0.25 / 1.30	2	9
—	0.00 / 1.65	—	29	21	—	0.05 / 1.60	—	254
—	0.00 / 1.00	—	233	22	—	1.45 / 2.40	—	2
—	0.00 / 1.00	—	33	23	—	1.60 / 3.80	—	4
—	0.00 / 0.50	—	7	24	—	2.80 / 4.60	—	—
—	0.00 / 0.75	—	505	25	—	3.50 / 5.90	—	1
A dash means the contract did not trade — not a price of zero.

Oct 16, 202641 days

call OI 13 · put OI 15

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	3.00 / 6.00	—	1	17	—	0.00 / 0.70	—	—
2.63	2.05 / 3.40	1	—	19	—	0.40 / 2.15	—	—
—	1.30 / 3.60	—	—	20	1.35	0.25 / 3.20	1	12
—	0.35 / 2.30	—	—	21	—	1.45 / 2.75	—	3
—	0.00 / 1.95	—	12	25	—	4.10 / 6.00	—	—
A dash means the contract did not trade — not a price of zero.

Nov 20, 202676 days

call OI 1,628 · put OI 122

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	4.00 / 6.70	—	319	16	—	0.05 / 2.70	—	12
—	3.30 / 6.30	—	20	17	—	0.00 / 2.95	—	64
—	3.10 / 6.00	—	221	18	—	0.85 / 1.95	—	12
—	3.00 / 3.80	—	597	19	—	0.35 / 2.70	—	17
2.87	2.05 / 3.80	12	276	20	2.55	1.65 / 3.30	5	2
—	1.10 / 3.70	—	33	21	—	0.85 / 4.20	—	2
—	0.75 / 3.20	—	72	22	—	2.40 / 4.70	—	2
—	0.45 / 2.70	—	49	23	—	2.80 / 5.60	—	11
—	0.20 / 2.30	—	5	24	—	3.70 / 6.00	—	—
—	0.05 / 2.05	—	36	25	—	4.80 / 6.70	—	—
A dash means the contract did not trade — not a price of zero.

Jan 15, 2027132 days

call OI 1,632 · put OI 252

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	5.40 / 7.50	—	226	16	—	0.00 / 2.25	—	6
—	3.90 / 6.70	—	35	17	—	0.20 / 3.30	—	2
—	3.30 / 6.00	—	66	18	—	1.00 / 3.50	—	17
—	2.80 / 5.70	—	15	19	—	1.00 / 3.50	—	—
—	3.30 / 5.00	—	238	20	—	0.70 / 3.10	—	122
—	2.00 / 4.10	—	64	21	—	2.10 / 4.60	—	—
2.77	1.35 / 4.10	13	35	22	—	3.30 / 5.30	—	—
—	2.25 / 3.90	—	56	23	—	3.50 / 5.20	—	76
—	0.75 / 3.20	—	731	24	—	3.90 / 6.60	—	—
—	1.15 / 2.90	—	166	25	—	5.20 / 6.70	—	29
A dash means the contract did not trade — not a price of zero.

Feb 19, 2027167 days

call OI 350 · put OI 20

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
6.14	5.50 / 7.40	10	—	16	—	0.55 / 3.20	—	2
—	4.30 / 7.20	—	—	17	—	1.10 / 2.55	—	9
—	3.70 / 7.10	—	43	18	—	2.05 / 2.75	—	9
—	2.50 / 5.60	—	289	19	—	1.30 / 3.70	—	—
—	2.55 / 5.50	—	7	20	—	1.80 / 4.00	—	—
—	2.05 / 4.80	—	1	22	—	3.10 / 5.70	—	—
—	2.55 / 4.50	—	5	23	—	3.70 / 6.50	—	—
—	1.45 / 3.80	—	2	24	—	4.50 / 7.40	—	—
—	0.45 / 3.60	—	3	25	—	4.70 / 8.10	—	—
A dash means the contract did not trade — not a price of zero.

How to read this chain

Calls sit on the left, puts on the right, and every row is one strike. The highlighted row is the strike closest to spot. Open interest is the number of contracts still outstanding at that strike — positions that exist right now. Volume is how many traded on the session shown. Open interest builds slowly and marks where positioning has accumulated; volume spikes and marks where attention went today.

Strikes with no open interest and no trades on either side are omitted, and the ladder is trimmed to within 25% of spot — the far wings are almost entirely empty and say nothing about positioning.

More on TNDM

TNDM options score TNDM gamma walls TNDM max pain TNDM IV rank TNDM put/call ratio TNDM options flow

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Educational, not investment advice. Options involve risk. Open interest is reported with a one-session lag by OCC, so these levels describe positioning as of the last settled session, not live intraday flow.