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Steel Dynamics, Inc. STLD

i

Market dataready · fetched 2026-11-12T14:56:39.658Z

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 · 2026-11-12T14:54:48.993773394Z

FundamentalsSEC EDGAR · ready · as of 2026-09-30 · fetched 2026-11-12T14:56:39.103131+00:00

Share price$237.94
1D-0.8%
$237.71$238.27$238.82$239.38$239.935:30 AM6:30 AM9:00 AM1:00 PMSTLD
Sold putSold call

Steel Dynamics, Inc. options

Live interpolated STLD call and put midpoint premiums by absolute delta.Steel Dynamics, Inc.$1.69$6.25$10.82$15.39$19.95$215.57$227.02$238.46$249.91$261.3620Δ25Δ30Δ35Δ40Δ45Δ50Δ55Δ60Δ65Δ70Δ75Δ80ΔOPTION PRICELive STLD spot · $237.94STLD PRICE$2.21$2.75$3.38$4.14$4.91$5.67$6.83$8.30$9.76$11.23$13.13$15.88$18.63$2.18$2.66$3.21$4.14$5.06$5.99$6.92$7.98$9.28$10.58$11.88$13.18$15.25
PutsCheap0.92×
CallsExpensive1.12×
SkewBullish-7.20 pp
Implied moveBalanced±$13.75
TiltBullish4.2% CALL
Table
Values and derived Greeks for the plotted delta buckets
DeltaCallsPuts
Pseudo strikeIVB/E movePseudo strikeIVB/E move
20Δ257.6558.8%9.2%222.7554.3%7.3%
25Δ252.7754.7%7.4%226.7149.5%5.8%
30Δ248.8852.0%6.0%230.3545.7%4.5%
35Δ246.2951.0%5.3%232.4445.8%4.1%
40Δ243.7050.1%4.5%234.5245.9%3.6%
45Δ241.1249.2%3.7%236.6146.1%3.1%
50Δ238.6649.5%3.2%238.6946.2%2.6%
55Δ236.2950.7%2.8%240.7746.0%2.2%
60Δ233.9351.9%2.4%242.8545.1%1.8%
65Δ231.5753.0%2.0%244.9344.3%1.5%
70Δ228.8454.5%1.7%247.0043.4%1.2%
75Δ225.3756.4%1.4%249.0842.6%0.9%
80Δ221.9158.4%1.1%251.7641.7%0.6%

20Δ

Calls
Pseudo strike
257.65
IV
58.8%
B/E move
9.2%
Puts
Pseudo strike
222.75
IV
54.3%
B/E move
7.3%

25Δ

Calls
Pseudo strike
252.77
IV
54.7%
B/E move
7.4%
Puts
Pseudo strike
226.71
IV
49.5%
B/E move
5.8%

30Δ

Calls
Pseudo strike
248.88
IV
52.0%
B/E move
6.0%
Puts
Pseudo strike
230.35
IV
45.7%
B/E move
4.5%

35Δ

Calls
Pseudo strike
246.29
IV
51.0%
B/E move
5.3%
Puts
Pseudo strike
232.44
IV
45.8%
B/E move
4.1%

40Δ

Calls
Pseudo strike
243.70
IV
50.1%
B/E move
4.5%
Puts
Pseudo strike
234.52
IV
45.9%
B/E move
3.6%

45Δ

Calls
Pseudo strike
241.12
IV
49.2%
B/E move
3.7%
Puts
Pseudo strike
236.61
IV
46.1%
B/E move
3.1%

50Δ

Calls
Pseudo strike
238.66
IV
49.5%
B/E move
3.2%
Puts
Pseudo strike
238.69
IV
46.2%
B/E move
2.6%

55Δ

Calls
Pseudo strike
236.29
IV
50.7%
B/E move
2.8%
Puts
Pseudo strike
240.77
IV
46.0%
B/E move
2.2%

60Δ

Calls
Pseudo strike
233.93
IV
51.9%
B/E move
2.4%
Puts
Pseudo strike
242.85
IV
45.1%
B/E move
1.8%

65Δ

Calls
Pseudo strike
231.57
IV
53.0%
B/E move
2.0%
Puts
Pseudo strike
244.93
IV
44.3%
B/E move
1.5%

70Δ

Calls
Pseudo strike
228.84
IV
54.5%
B/E move
1.7%
Puts
Pseudo strike
247.00
IV
43.4%
B/E move
1.2%

75Δ

Calls
Pseudo strike
225.37
IV
56.4%
B/E move
1.4%
Puts
Pseudo strike
249.08
IV
42.6%
B/E move
0.9%

80Δ

Calls
Pseudo strike
221.91
IV
58.4%
B/E move
1.1%
Puts
Pseudo strike
251.76
IV
41.7%
B/E move
0.6%

Options history

IV · four-Friday blend40.20%
Daily EOD
STLD36.0%38.4%40.8%2026-10-19: 40.32%2026-10-20: 36.78%2026-10-21: 36.29%2026-10-22: 38.15%2026-10-23: 37.70%2026-10-26: 39.09%2026-10-27: 40.06%2026-10-28: 40.44%2026-10-29: 39.28%2026-10-30: 40.20%Oct 19Oct 23Oct 30
10 observations2026-10-19 — 2026-10-30
Table
DateIV (%)
40.32%
36.78%
36.29%
38.15%
37.70%
39.09%
40.06%
40.44%
39.28%
40.20%