PWZ · IV Rank History

Invesco California AMT-Free Municipal Bond ETF · ETF

IV rank shows where PWZ'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.

PWZ's 30-day at-the-money implied volatility was 33.7% as of Oct 22, 2026. Its 52-week IV rank is 20 and its IV percentile is 57%: IV was lower on 57% of the past year's sessions. Over those 52 weeks it ranged from 16.6% (Oct 20, 2025) to 100.6% (Jul 20, 2026). On the 90-session window our screeners use, the IV rank is 18.

PWZ 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).

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

52-Week IV Rank
20
0 = year low, 100 = year high
IV Percentile
57%
of past-year sessions had lower IV
90-Session IV Rank
18
used by our screeners
30-Day ATM IV
33.7%
1-year average 36.3%
52-Week IV High
100.6%
2026-07-20
52-Week IV Low
16.6%
2025-10-20
History Since
2023-05-02
843 sessions

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

PWZ implied volatility by month

MonthAvg ATM IVHighLowAvg IV Rank (90-session)
Oct 2026 (to date) 43.3% 71.9% 19.5% 29
Sep 2026 49.1% 71.3% 35.0% 36
Aug 2026 35.9% 84.7% 20.1% 20
Jul 2026 55.5% 100.6% 19.8% 58
Jun 2026 47.3% 56.4% 35.6% 85
May 2026 31.4% 44.1% 24.9% 56
Apr 2026 32.4% 39.4% 26.4% 63
Mar 2026 33.7% 40.9% 30.6% 68
Feb 2026 28.7% 35.6% 18.3% 61
Jan 2026 23.9% 31.3% 18.2% 37
Dec 2025 32.4% 35.1% 29.5% 80
Nov 2025 29.9% 36.4% 25.8% 67
Oct 2025 22.2% 25.9% 16.6% 38
Sep 2025 26.6% 32.8% 18.7% 34
Aug 2025 26.7% 33.4% 21.2% 36
Jul 2025 24.8% 37.7% 14.9% 33
Jun 2025 20.0% 31.2% 10.6% 23
May 2025 30.9% 57.5% 22.1% 63
Apr 2025 22.2% 36.8% 8.9% 56
Mar 2025 16.2% 23.7% 12.4% 37
Feb 2025 13.3% 16.5% 10.9% 20
Jan 2025 14.0% 20.6% 9.4% 21
Dec 2024 15.2% 27.8% 11.9% 26
Nov 2024 15.0% 26.5% 11.4% 24
Oct 2024 15.3% 22.8% 11.7% 20
Sep 2024 14.2% 31.7% 10.9% 17
Aug 2024 13.7% 22.0% 9.3% 8
Jul 2024 13.5% 18.5% 10.8% 8
Jun 2024 18.6% 43.0% 8.4% 13
May 2024 20.7% 27.9% 15.7% 4
Apr 2024 29.0% 73.1% 25.3% 17
Mar 2024 23.4% 26.7% 21.2% 19
Feb 2024 24.4% 26.9% 22.9% 20
Jan 2024 27.2% 92.5% 19.1% 23
Dec 2023 28.3% 91.3% 16.5% 57
Nov 2023 23.3% 27.5% 7.4% 66
Oct 2023 19.0% 29.5% 11.4% 40
Sep 2023 16.6% 31.3% 9.8% 8
Aug 2023 19.7% 30.5% 10.0% 11
Jul 2023 16.7% 28.0% 8.0% 7
Jun 2023 20.1% 26.3% 9.4% 8
May 2023 50.7% 115.8% 16.6% 3

PWZ IV rank: last 30 sessions

DateIV Rank (90-session)30-Day ATM IV7-Day ATM IV
2026-10-22 18 33.7% —
2026-10-21 8 26.3% —
2026-10-20 3 22.3% —
2026-10-19 10 27.2% —
2026-10-16 12 29.1% —
2026-10-15 8 26.0% —
2026-10-14 0 19.5% 135.7%
2026-10-13 9 27.0% 115.0%
2026-10-12 51 61.2% 95.0%
2026-10-09 47 57.4% 73.2%
2026-10-08 50 59.8% 61.3%
2026-10-07 55 63.8% 51.3%
2026-10-06 41 53.2% 52.9%
2026-10-05 50 60.4% 48.8%
2026-10-02 65 71.9% 136.5%
2026-10-01 42 53.6% 94.3%
2026-09-30 43 54.8% 89.7%
2026-09-29 22 37.4% 54.0%
2026-09-28 24 39.0% 55.0%
2026-09-25 50 60.5% 81.2%
2026-09-24 53 62.3% —
2026-09-23 58 66.7% —
2026-09-22 64 71.3% —
2026-09-21 34 47.5% —
2026-09-18 39 51.6% —
2026-09-17 39 51.3% —
2026-09-16 33 46.1% 136.5%
2026-09-15 32 45.3% 112.9%
2026-09-14 31 44.7% 89.8%
2026-09-11 30 43.8% 48.7%

Market data may be delayed, incomplete, or inaccurate. Not a recommendation to buy, sell, or hold any security. Verify quotes with your broker before trading. See Terms §17.