BTRN · IV Rank History

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IV rank shows where BTRN'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.

BTRN's 30-day at-the-money implied volatility was 14.7% as of Oct 22, 2026. Its 52-week IV rank is 3 and its IV percentile is 2%: IV was lower on 2% of the past year's sessions. Over those 52 weeks it ranged from 11.5% (Oct 14, 2026) to 111.4% (Dec 19, 2025). On the 90-session window our screeners use, the IV rank is 5.

BTRN IV rank history

504 sessions

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

BTRN IV rank and implied volatility as of 2026-10-22

52-Week IV Rank

0 = year low, 100 = year high

IV Percentile

of past-year sessions had lower IV

90-Session IV Rank

used by our screeners

30-Day ATM IV

14.7%

1-year average 40.5%

52-Week IV High

111.4%

2025-12-19

52-Week IV Low

11.5%

2026-10-14

History Since

2024-05-08

597 sessions

How these are measured. Implied volatility here is BTRN'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 BTRN 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.

BTRN implied volatility by month

Month	Avg ATM IV	High	Low	Avg IV Rank (90-session)
Oct 2026 (to date)	40.6%	77.5%	11.5%	46
Sep 2026	43.2%	65.8%	20.3%	62
Aug 2026	28.4%	37.2%	17.5%	27
Jul 2026	31.1%	44.8%	21.5%	27
Jun 2026	33.5%	51.2%	26.6%	24
May 2026	33.3%	40.3%	27.6%	18
Apr 2026	38.0%	45.5%	30.2%	14
Mar 2026	47.6%	55.1%	41.1%	26
Feb 2026	41.2%	50.3%	36.7%	18
Jan 2026	42.5%	78.8%	25.7%	19
Dec 2025	69.6%	111.4%	46.1%	84
Nov 2025	37.9%	45.0%	34.6%	90
Oct 2025	34.2%	37.7%	29.8%	75
Sep 2025	27.5%	31.7%	26.1%	16
Aug 2025	28.2%	31.2%	25.5%	12
Jul 2025	31.0%	34.8%	26.7%	18
Jun 2025	32.2%	35.5%	29.0%	12
May 2025	35.1%	42.9%	32.0%	9
Apr 2025	38.9%	41.9%	36.4%	7
Mar 2025	39.3%	42.5%	34.7%	5
Feb 2025	38.3%	43.1%	34.4%	4
Jan 2025	43.2%	50.7%	35.3%	5
Dec 2024	69.6%	83.3%	44.6%	11
Nov 2024	83.0%	133.3%	66.7%	15
Oct 2024	77.9%	89.4%	64.1%	15
Sep 2024	80.1%	102.7%	62.8%	16
Aug 2024	117.7%	236.9%	58.0%	39
Jul 2024	64.2%	73.1%	58.6%	56
Jun 2024	62.6%	75.0%	50.5%	20
May 2024	67.5%	74.1%	62.9%	—

BTRN IV rank: last 30 sessions

Date	IV Rank (90-session)	30-Day ATM IV	7-Day ATM IV
2026-10-22	5	14.7%	—
2026-10-21	4	14.3%	—
2026-10-20	4	13.9%	—
2026-10-19	3	13.4%	—
2026-10-16	0	11.6%	—
2026-10-15	0	11.5%	—
2026-10-14	0	11.5%	37.7%
2026-10-13	54	50.1%	208.2%
2026-10-12	69	58.9%	181.5%
2026-10-09	67	57.9%	138.4%
2026-10-08	68	58.2%	129.9%
2026-10-07	83	67.2%	122.6%
2026-10-06	100	77.5%	116.5%
2026-10-05	100	67.3%	111.2%
2026-10-02	87	59.5%	76.3%
2026-10-01	93	62.5%	95.0%
2026-09-30	95	63.1%	92.5%
2026-09-29	79	55.8%	89.7%
2026-09-28	99	65.1%	89.7%
2026-09-25	99	65.5%	82.1%
2026-09-24	49	40.9%	—
2026-09-23	100	65.8%	—
2026-09-22	88	58.0%	—
2026-09-21	100	63.3%	—
2026-09-18	8	20.3%	—
2026-09-17	93	48.8%	—
2026-09-16	92	48.4%	189.5%
2026-09-15	42	31.6%	113.2%
2026-09-14	33	28.8%	97.2%
2026-09-11	36	29.8%	80.5%