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iShares 20 Year Treasury Bond ETF TLT

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Market dataready · fetched 2026-11-06T22:31:27.944Z

Delta surfaceAlpaca · derived absolute-delta buckets · 2026-11-13

Calculation methodology

Options historyIV: ThetaData historical Greeks, equal-weight mean of call/put 50-delta IV across the next four listed Friday-cycle expirations, including holiday shifts verified against ThetaData’s market calendar. Missing inputs leave gaps. Skew: equal-weight mean of put minus call IV across those four expirations. IV-implied move history: mean of each expiration’s average call/put IV multiplied by the square root of remaining calendar days divided by 365.25; percentage of spot, not a quoted straddle premium.

History data

PriceAlpaca · sip · 2026-11-06T22:29:01.735062148Z

FundamentalsAlpha Vantage · ready · fetched 2026-11-06T22:31:27.032219+00:00

Share price$81.92
1D+0.3%
AH$81.52$81.73$81.93$82.13$82.335:30 AM6:30 AM9:00 AM1:00 PM2:00 PMTLT
Sold putSold callAH

iShares 20 Year Treasury Bond ETF options

Live interpolated TLT call and put midpoint premiums by absolute delta.iShares 20 Year Treasury Bond ETF$0.11$0.48$0.85$1.22$1.59$80.22$81.05$81.88$82.71$83.5420Δ25Δ30Δ35Δ40Δ45Δ50Δ55Δ60Δ65Δ70Δ75Δ80ΔOPTION PRICELive TLT spot · $81.92TLT PRICE$0.15$0.19$0.25$0.30$0.37$0.43$0.50$0.61$0.72$0.83$0.94$1.06$1.19$0.16$0.21$0.26$0.32$0.39$0.47$0.55$0.66$0.77$0.89$1.06$1.22$1.48
PutsExpensive1.15×
CallsFair0.99×
SkewBearish+0.80 pp
Implied moveBearish±$1.05
TiltBearish5.5% PUT
Table
Values and derived Greeks for the plotted delta buckets
DeltaCallsPuts
Pseudo strikeIVB/E movePseudo strikeIVB/E move
20Δ83.1311.7%1.7%80.8312.0%1.5%
25Δ82.8911.5%1.4%81.0712.0%1.3%
30Δ82.6911.4%1.2%81.2711.9%1.1%
35Δ82.4911.3%1.1%81.4811.8%0.9%
40Δ82.3211.2%0.9%81.6511.8%0.8%
45Δ82.1611.2%0.8%81.8211.9%0.7%
50Δ81.9911.2%0.7%81.9911.9%0.6%
55Δ81.8211.5%0.6%82.1712.1%0.5%
60Δ81.6411.7%0.5%82.3512.3%0.4%
65Δ81.4711.9%0.5%82.5412.4%0.3%
70Δ81.3011.6%0.4%82.7612.6%0.3%
75Δ81.1211.3%0.3%82.9812.8%0.2%
80Δ80.9311.0%0.2%83.3013.3%0.1%

20Δ

Calls
Pseudo strike
83.13
IV
11.7%
B/E move
1.7%
Puts
Pseudo strike
80.83
IV
12.0%
B/E move
1.5%

25Δ

Calls
Pseudo strike
82.89
IV
11.5%
B/E move
1.4%
Puts
Pseudo strike
81.07
IV
12.0%
B/E move
1.3%

30Δ

Calls
Pseudo strike
82.69
IV
11.4%
B/E move
1.2%
Puts
Pseudo strike
81.27
IV
11.9%
B/E move
1.1%

35Δ

Calls
Pseudo strike
82.49
IV
11.3%
B/E move
1.1%
Puts
Pseudo strike
81.48
IV
11.8%
B/E move
0.9%

40Δ

Calls
Pseudo strike
82.32
IV
11.2%
B/E move
0.9%
Puts
Pseudo strike
81.65
IV
11.8%
B/E move
0.8%

45Δ

Calls
Pseudo strike
82.16
IV
11.2%
B/E move
0.8%
Puts
Pseudo strike
81.82
IV
11.9%
B/E move
0.7%

50Δ

Calls
Pseudo strike
81.99
IV
11.2%
B/E move
0.7%
Puts
Pseudo strike
81.99
IV
11.9%
B/E move
0.6%

55Δ

Calls
Pseudo strike
81.82
IV
11.5%
B/E move
0.6%
Puts
Pseudo strike
82.17
IV
12.1%
B/E move
0.5%

60Δ

Calls
Pseudo strike
81.64
IV
11.7%
B/E move
0.5%
Puts
Pseudo strike
82.35
IV
12.3%
B/E move
0.4%

65Δ

Calls
Pseudo strike
81.47
IV
11.9%
B/E move
0.5%
Puts
Pseudo strike
82.54
IV
12.4%
B/E move
0.3%

70Δ

Calls
Pseudo strike
81.30
IV
11.6%
B/E move
0.4%
Puts
Pseudo strike
82.76
IV
12.6%
B/E move
0.3%

75Δ

Calls
Pseudo strike
81.12
IV
11.3%
B/E move
0.3%
Puts
Pseudo strike
82.98
IV
12.8%
B/E move
0.2%

80Δ

Calls
Pseudo strike
80.93
IV
11.0%
B/E move
0.2%
Puts
Pseudo strike
83.30
IV
13.3%
B/E move
0.1%

Options history

IV · four-Friday blend13.36%
Daily close
TLT8.8%13.9%19.1%2026-08-10: 11.34%2026-08-11: 11.78%2026-08-12: 10.29%2026-08-13: 9.53%2026-08-14: 10.19%2026-08-17: 11.47%2026-08-18: 10.80%2026-08-19: 11.01%2026-08-20: 11.51%2026-08-21: 10.84%2026-08-24: 11.41%2026-08-25: 11.61%2026-08-26: 11.64%2026-08-27: 11.71%2026-08-28: 10.20%2026-08-31: 11.21%2026-09-01: 11.45%2026-09-02: 10.97%2026-09-03: 11.24%2026-09-04: 9.61%2026-09-08: 11.63%2026-09-09: 11.68%2026-09-10: 14.27%2026-09-11: 11.08%2026-09-14: 13.28%2026-09-15: 14.87%2026-09-16: 12.73%2026-09-17: 10.90%2026-09-18: 10.98%2026-09-21: 11.44%2026-09-22: 11.38%2026-09-23: 13.66%2026-09-24: 16.51%2026-09-25: 14.34%2026-09-28: 16.41%2026-09-29: 18.37%2026-09-30: 18.34%2026-10-01: 17.71%2026-10-02: 14.85%2026-10-05: 15.88%2026-10-06: 13.72%2026-10-07: 14.44%2026-10-08: 14.99%2026-10-09: 12.77%2026-10-12: 13.55%2026-10-13: 13.97%2026-10-14: 14.14%2026-10-15: 14.36%2026-10-16: 14.51%2026-10-19: 13.80%2026-10-20: 13.44%2026-10-21: 13.13%2026-10-22: 15.89%2026-10-23: 13.72%2026-10-26: 13.94%2026-10-27: 13.41%2026-10-28: 13.32%2026-10-30: 13.36%Aug 10Sep 18Oct 30
58 observations2026-08-10 — 2026-10-30
Table
DateIV (%)
11.34%
11.78%
10.29%
9.53%
10.19%
11.47%
10.80%
11.01%
11.51%
10.84%
11.41%
11.61%
11.64%
11.71%
10.20%
11.21%
11.45%
10.97%
11.24%
9.61%
11.63%
11.68%
14.27%
11.08%
13.28%
14.87%
12.73%
10.90%
10.98%
11.44%
11.38%
13.66%
16.51%
14.34%
16.41%
18.37%
18.34%
17.71%
14.85%
15.88%
13.72%
14.44%
14.99%
12.77%
13.55%
13.97%
14.14%
14.36%
14.51%
13.80%
13.44%
13.13%
15.89%
13.72%
13.94%
13.41%
13.32%
13.36%