SNDX · Option chain

SNDX Option Chain

Every listed SNDX strike within 25% of spot, across the next 6 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

$20.68

Call open interest

9,018

Put open interest

2,802

Put/call (volume)

0.03

796 contracts changed hands across these expirations — 771 calls against 25 puts. Calls outtraded puts 30.84 to one.

Sep 18, 202613 days

call OI 703 · put OI 1,515

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	2.45 / 5.10	—	4	17	—	0.00 / 0.40	—	5
—	1.50 / 4.20	—	2	18	—	0.00 / 0.75	—	125
—	0.75 / 3.60	—	18	19	—	0.00 / 0.40	—	17
—	0.85 / 1.80	—	132	20	0.51	0.25 / 1.05	10	1,051
—	0.20 / 0.90	—	19	21	—	0.45 / 1.25	—	—
—	0.00 / 0.50	—	407	22	—	0.30 / 2.90	—	314
—	0.00 / 2.15	—	40	23	—	1.10 / 3.80	—	1
—	0.00 / 0.90	—	81	25	—	2.80 / 5.70	—	2
A dash means the contract did not trade — not a price of zero.

Oct 16, 202641 days

call OI 1,583 · put OI 285

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	2.75 / 5.50	—	—	17	—	0.00 / 2.50	—	151
—	2.00 / 4.70	—	13	18	0.60	0.45 / 0.80	1	43
—	1.30 / 4.00	—	1	19	—	0.25 / 1.30	—	10
—	0.75 / 2.30	—	21	20	—	0.95 / 1.35	—	10
1.95	1.15 / 1.80	3	4	21	—	1.35 / 1.85	—	15
—	0.85 / 1.35	—	318	22	—	1.95 / 2.50	—	9
—	0.20 / 1.35	—	1	23	—	1.55 / 4.00	—	31
—	0.25 / 0.75	—	4	24	—	2.35 / 5.00	—	1
0.40	0.25 / 0.55	19	1,221	25	—	3.20 / 6.00	—	15
A dash means the contract did not trade — not a price of zero.

Nov 20, 202676 days

call OI 2,720 · put OI 623

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	4.40 / 7.70	—	—	16	—	0.00 / 2.55	—	10
—	3.00 / 6.90	—	—	17	—	0.40 / 1.55	—	10
—	2.35 / 6.20	—	—	18	—	0.65 / 1.90	—	2
—	1.70 / 5.60	—	—	19	—	1.15 / 2.35	—	1
—	2.65 / 3.50	—	300	20	2.25	1.80 / 2.55	10	300
—	2.35 / 3.10	—	15	21	—	2.30 / 3.30	—	—
—	1.30 / 3.10	—	1,002	22	—	1.30 / 4.20	—	—
—	1.00 / 2.50	—	5	23	—	2.80 / 4.90	—	—
—	0.00 / 2.10	—	308	24	—	3.50 / 5.70	—	300
—	1.25 / 1.65	—	1,090	25	—	3.60 / 7.60	—	—
A dash means the contract did not trade — not a price of zero.

Jan 15, 2027132 days

call OI 3,766 · put OI 208

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	4.10 / 8.00	—	1	16	—	0.75 / 1.20	—	10
—	3.40 / 7.30	—	7	17	—	0.00 / 1.85	—	25
—	3.70 / 6.60	—	100	18	—	0.00 / 4.00	—	4
—	3.00 / 6.10	—	4	19	—	0.20 / 4.20	—	1
—	2.80 / 4.50	—	97	20	—	2.20 / 3.10	—	12
3.45	3.00 / 3.70	3	27	21	—	2.75 / 3.50	—	33
3.00	2.65 / 3.00	746	3,228	22	—	3.40 / 3.90	—	5
—	2.15 / 3.10	—	9	23	—	4.20 / 4.80	—	9
—	1.45 / 2.80	—	20	24	—	4.20 / 6.20	—	—
—	1.20 / 2.20	—	273	25	—	5.10 / 6.80	—	109
A dash means the contract did not trade — not a price of zero.

Apr 16, 2027223 days

call OI 1 · put OI 0

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	5.30 / 9.00	—	—	16	1.80	0.30 / 4.10	1	—
—	3.90 / 7.50	—	—	19	2.90	1.60 / 4.80	1	—
—	3.40 / 7.00	—	—	20	3.40	2.15 / 5.40	1	—
—	2.95 / 6.50	—	—	21	4.00	2.70 / 5.90	1	—
—	2.55 / 6.00	—	1	22	—	3.20 / 6.50	—	—
A dash means the contract did not trade — not a price of zero.

Jan 21, 2028503 days

call OI 245 · put OI 171

Calls				Strike	Puts
Last	Bid / Ask	Vol	OI		Last	Bid / Ask	Vol	OI
—	5.80 / 10.50	—	11	17	—	1.00 / 6.00	—	52
—	4.50 / 9.00	—	109	20	—	2.50 / 7.50	—	1
—	3.50 / 8.50	—	9	22	—	3.50 / 8.50	—	2
—	3.20 / 7.50	—	116	25	—	5.50 / 10.50	—	116
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 SNDX

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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.