SNDK · IV Rank History

Sandisk Corporation Common Stock

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IV rank shows where SNDK's implied volatility sits within its own recent range: 0 is the lowest reading in the window, 100 the highest. This page gives the 52-week version, the 90-session version our screeners use, the IV percentile, and the daily history.

SNDK's 30-day at-the-money implied volatility was 75.5% as of Oct 23, 2026. Its 52-week IV rank is 12 and its IV percentile is 13%: IV was lower on 13% of the past year's sessions. Over those 52 weeks it ranged from 62.9% (Oct 5, 2026) to 163.4% (Jul 20, 2026). On the 90-session window our screeners use, the IV rank is 12.

SNDK IV rank history

380 sessions

Filled line: 90-session IV rank (0–100, left axis). Dashed line: 30-day at-the-money implied volatility (right axis).

SNDK IV rank and implied volatility as of 2026-10-23

52-Week IV Rank

0 = year low, 100 = year high

IV Percentile

13%

of past-year sessions had lower IV

90-Session IV Rank

used by our screeners

30-Day ATM IV

75.5%

1-year average 101.1%

7-Day ATM IV

97.7%

90-session rank 36

52-Week IV High

163.4%

2026-07-20

52-Week IV Low

62.9%

2026-10-05

History Since

2025-04-07

380 sessions

How these are measured. Implied volatility here is SNDK's 30-day at-the-money IV: the implied volatility of the calls and puts struck nearest the share price, blended between the expirations on either side of 30 days so every reading covers the same horizon. It's the IV level options traders usually quote, and it doesn't jump when the nearest expiration rolls from a weekly to a monthly. The 7-day figure is the same measure a week out, so it reacts first to near-term events such as earnings.

52-week IV rank = (today's IV − 52-week low) ÷ (52-week high − 52-week low) × 100. IV percentile is the share of the past year's sessions that closed with lower IV than today. The 90-session IV rank applies the same rank formula to the last 90 sessions, so it reacts faster.

A high reading means SNDK options are expensive relative to their own recent history, which is common ahead of earnings or after a sharp move. It says nothing about which way the stock will go. The Vol Arb Screener ranks every tracked symbol by these measures.

SNDK implied volatility by month

Month	Avg ATM IV	High	Low	Avg IV Rank (90-session)
Oct 2026 (to date)	70.1%	79.2%	62.9%	7
Sep 2026	71.8%	78.9%	67.3%	5
Aug 2026	90.0%	133.6%	67.6%	10
Jul 2026	138.1%	163.4%	110.9%	85
Jun 2026	106.6%	112.4%	100.1%	58
May 2026	101.4%	105.9%	93.7%	44
Apr 2026	111.6%	119.0%	105.2%	80
Mar 2026	96.0%	107.7%	89.5%	37
Feb 2026	104.5%	115.9%	96.0%	57
Jan 2026	107.4%	117.8%	99.5%	76
Dec 2025	91.4%	98.6%	82.5%	61
Nov 2025	109.5%	119.0%	97.5%	84
Oct 2025	112.5%	121.8%	91.0%	95
Sep 2025	69.9%	90.1%	49.1%	66
Aug 2025	53.0%	64.0%	44.2%	8
Jul 2025	56.5%	62.1%	49.1%	11
Jun 2025	54.6%	57.0%	52.0%	5
May 2025	62.2%	86.0%	51.5%	3
Apr 2025	95.3%	116.9%	82.3%	—

SNDK IV rank: last 30 sessions

Date	IV Rank (90-session)	30-Day ATM IV	7-Day ATM IV
2026-10-23	12	75.5%	97.7%
2026-10-22	16	79.2%	101.3%
2026-10-21	11	73.8%	89.7%
2026-10-20	12	74.6%	87.4%
2026-10-19	12	74.9%	84.5%
2026-10-16	12	75.4%	71.4%
2026-10-15	11	74.0%	72.5%
2026-10-14	9	71.7%	71.1%
2026-10-13	6	68.7%	65.4%
2026-10-12	2	65.4%	59.2%
2026-10-09	2	64.7%	52.6%
2026-10-08	3	65.8%	58.5%
2026-10-07	2	65.3%	57.3%
2026-10-06	0	63.1%	56.6%
2026-10-05	0	62.9%	57.5%
2026-10-02	0	65.7%	54.7%
2026-10-01	4	71.0%	61.8%
2026-09-30	10	76.4%	73.5%
2026-09-29	3	70.6%	71.6%
2026-09-28	3	69.9%	70.5%
2026-09-25	4	70.8%	70.2%
2026-09-24	4	70.9%	72.9%
2026-09-23	6	73.2%	74.9%
2026-09-22	10	77.0%	81.5%
2026-09-21	5	72.2%	75.3%
2026-09-18	3	70.4%	64.0%
2026-09-17	2	68.9%	65.3%
2026-09-16	1	68.2%	69.5%
2026-09-15	1	68.3%	67.1%
2026-09-14	2	69.3%	68.2%