TLT Expected Move Calculator
Calculate the expected price range for iShares 20+ Year Treasury ETF (TLT) based on implied volatility and time to expiration.
TLT options are the primary vehicle for trading long-duration interest rate risk. IV spikes around Fed meetings and CPI releases.
Over the last three months TLT has been on the calmer end for individual stocks: 10.1% annualized realized volatility (under 25% band). Quiet stretches keep expected moves narrow. If the option chain's IV sits well above this, the market is pricing in more movement than the stock has lately delivered — often ahead of a catalyst.
Quote refreshes every 6h. Use as context — not a real-time price.
Enter stock price, implied volatility, and days to expiration, then click Calculate expected move to see the expected price range.
For educational purposes only. Not financial advice. Read full disclaimer
Worked Example: TLT Expected Move at $77.71
Using TLT's last quote of $77.71 (as of October 1, 2026), with TLT's own 3-month realized volatility of 10.1% standing in for IV. Implied volatility usually runs above realized — especially before earnings — so enter the at-the-money IV from your option chain for the market's number.
30-day 1σ move (~68%)
±$2.25 (±2.9%)
$75.46 – $79.96
30-day 2σ range (~95%)
±$4.50
$73.21 – $82.21
7-day 1σ move
±$1.09
$76.62 – $78.80
$77.71 × 10.1% × √(30 / 365) = $2.25
- TLT sits 1% of the way from its 52-week low ($77.55) to its high ($92.19). The 30-day 1σ band spans 31% of the width of that 52-week range.
- At this volatility, the 2σ band reaches below the 52-week low of $77.55 — a tail move would put TLT somewhere it hasn't traded all year.
Expected Move for Similar Tickers
Trading TLT Options & Expected Move
TLT's expected move is the cleanest single instrument for expressing long-duration interest-rate views, with IV expanding sharply around FOMC meetings, CPI prints, and major Treasury auction events. Quarterly refunding announcements are a recurring catalyst that fixed-income traders watch closely. Options chains are deep in monthlies and active in weeklies. Traders use TLT to hedge equity portfolios, express recession views, or fund tactical macro positions. Skew has shifted over the rate cycle, often tilting to puts during persistent inflation regimes. When computing expected move, calibrate to upcoming Fed-speaker calendars and economic-data releases; TLT's realized move has repeatedly exceeded one-day implied during data-heavy weeks when multiple catalysts cluster within a single options expiration cycle.
Expected Move Formula
Expected Move = Price × IV × √(DTE / 365)
1σ Range: Price ± Expected Move (≈68% probability)
2σ Range: Price ± 2 × Expected Move (≈95% probability)
How to Use This Calculator for TLT
- Enter TLT's current stock price — check your broker or a financial data site for the latest quote.
- Enter the implied volatility — use the at-the-money IV for the expiration you're targeting. Your broker's option chain will show this.
- Enter days to expiration — the number of calendar days until the options expire.
- Click Calculate — see the 1σ and 2σ expected ranges for TLT.
- Apply to your trade — use the ranges to select strikes, evaluate iron condors, or decide if options premiums are fairly priced.
Frequently Asked Questions
- What is the expected move for TLT?
- The expected move for TLT (iShares 20+ Year Treasury ETF) is the price range the market expects the stock to stay within over a given period, based on its current implied volatility. Enter the stock price, IV, and days to expiration above to calculate it.
- How is TLT's expected move calculated?
- Expected Move = Stock Price × IV × √(DTE / 365). The 1 standard deviation range covers approximately 68% probability, and the 2 standard deviation range covers approximately 95%.
- What does TLT's implied volatility tell me?
- TLT's IV reflects the market's consensus on how much the stock will move. Higher IV means options are more expensive and the expected range is wider. IV often rises before earnings and falls after (vol crush).
- Should I buy or sell options on TLT?
- That depends on whether IV is elevated or depressed relative to historical levels. When IV is high, selling strategies (covered calls, iron condors) can be more profitable. When IV is low, buying options is cheaper. This calculator helps you understand the expected range before deciding.
- How accurate is the expected move?
- The expected move is a statistical estimate, not a guarantee. Historically, stocks stay within the 1σ expected range about 68% of the time and within the 2σ range about 95% of the time. Earnings announcements, news events, and market crashes can cause moves well beyond the expected range.