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The RBB Fund, Inc. US Treasury 20 Year Bond ETF UTWY

i

Market dataready · fetched 2026-11-13T01:27:20.885Z

Delta surfaceAlpaca · derived absolute-delta buckets · 2026-11-20

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 · 2026-11-12T21:00:00.11075275Z

FundamentalsAlpha Vantage · ready · fetched 2026-11-13T01:27:20.546106+00:00

Share price$39.93
1D-0.7%
AH$39.90$39.99$40.07$40.16$40.245:30 AM6:30 AM9:00 AM1:00 PM2:00 PMUTWY
Sold putSold callAH

The RBB Fund, Inc. US Treasury 20 Year Bond ETF options

Live interpolated UTWY call and put midpoint premiums by absolute delta.The RBB Fund, Inc. US Treasury 20 Year Bond ETF$0.46$0.59$0.72$0.86$0.99$38.76$39.62$40.48$41.34$42.2020Δ25Δ30Δ35Δ40Δ45Δ50Δ55Δ60Δ65Δ70Δ75Δ80Δ55Δ P unavailable: no unambiguous, price-consistent delta bracketP —60Δ P unavailable: no unambiguous, price-consistent delta bracketP —65Δ P unavailable: no unambiguous, price-consistent delta bracketP —70Δ P unavailable: no unambiguous, price-consistent delta bracketP —75Δ P unavailable: no unambiguous, price-consistent delta bracketP —80Δ P unavailable: no unambiguous, price-consistent delta bracketP —OPTION PRICELive UTWY spot · $39.93UTWY PRICE$0.47$0.47$0.47$0.49$0.53$0.56$0.60$0.66$0.72$0.78$0.83$0.89$0.95$0.47$0.47$0.47$0.49$0.52$0.55$0.57
Puts——
CallsExpensive5.63×
Skew——
Implied moveBullish±$1.17
Tilt——
Table
Values and derived Greeks for the plotted delta buckets
DeltaCallsPuts
Pseudo strikeIVB/E movePseudo strikeIVB/E move
20Δ44.2376.9%12.0%36.8669.6%8.9%
25Δ42.4757.3%7.6%38.0552.6%5.9%
30Δ41.5145.0%5.2%38.7342.1%4.2%
35Δ40.9036.9%3.7%39.1635.6%3.1%
40Δ40.6033.4%3.0%39.4431.8%2.5%
45Δ40.2929.9%2.3%39.7128.0%1.9%
50Δ40.0026.4%1.7%39.9824.1%1.3%
55Δ39.8624.9%1.5%
60Δ39.7223.4%1.3%
65Δ39.5921.9%1.1%
70Δ39.4520.3%0.9%
75Δ39.3118.8%0.7%
80Δ39.1817.3%0.5%

20Δ

Calls
Pseudo strike
44.23
IV
76.9%
B/E move
12.0%
Puts
Pseudo strike
36.86
IV
69.6%
B/E move
8.9%

25Δ

Calls
Pseudo strike
42.47
IV
57.3%
B/E move
7.6%
Puts
Pseudo strike
38.05
IV
52.6%
B/E move
5.9%

30Δ

Calls
Pseudo strike
41.51
IV
45.0%
B/E move
5.2%
Puts
Pseudo strike
38.73
IV
42.1%
B/E move
4.2%

35Δ

Calls
Pseudo strike
40.90
IV
36.9%
B/E move
3.7%
Puts
Pseudo strike
39.16
IV
35.6%
B/E move
3.1%

40Δ

Calls
Pseudo strike
40.60
IV
33.4%
B/E move
3.0%
Puts
Pseudo strike
39.44
IV
31.8%
B/E move
2.5%

45Δ

Calls
Pseudo strike
40.29
IV
29.9%
B/E move
2.3%
Puts
Pseudo strike
39.71
IV
28.0%
B/E move
1.9%

50Δ

Calls
Pseudo strike
40.00
IV
26.4%
B/E move
1.7%
Puts
Pseudo strike
39.98
IV
24.1%
B/E move
1.3%

55Δ

Calls
Pseudo strike
39.86
IV
24.9%
B/E move
1.5%
Puts
Pseudo strike
IV
B/E move

60Δ

Calls
Pseudo strike
39.72
IV
23.4%
B/E move
1.3%
Puts
Pseudo strike
IV
B/E move

65Δ

Calls
Pseudo strike
39.59
IV
21.9%
B/E move
1.1%
Puts
Pseudo strike
IV
B/E move

70Δ

Calls
Pseudo strike
39.45
IV
20.3%
B/E move
0.9%
Puts
Pseudo strike
IV
B/E move

75Δ

Calls
Pseudo strike
39.31
IV
18.8%
B/E move
0.7%
Puts
Pseudo strike
IV
B/E move

80Δ

Calls
Pseudo strike
39.18
IV
17.3%
B/E move
0.5%
Puts
Pseudo strike
IV
B/E move

Options history

IV · four-Friday blend15.12%
Daily EOD
UTWY14.5%15.8%17.0%2026-10-19: 16.42%2026-10-20: 16.65%2026-10-21: 16.42%2026-10-22: 16.79%2026-10-23: 15.14%2026-10-26: 15.33%2026-10-27: 15.24%2026-10-28: 14.71%2026-10-29: 15.06%2026-10-30: 15.12%Oct 19Oct 23Oct 30
10 observations2026-10-19 — 2026-10-30
Table
DateIV (%)
16.42%
16.65%
16.42%
16.79%
15.14%
15.33%
15.24%
14.71%
15.06%
15.12%