GILD Deep Analytical Report

Gilead Sciences, Inc. | Category: Equity Mega Cap | Ann. Div Yield: 2.09% ($3.16) | Last Updated: 2026-02-22 | Data Range: 1992-01-01 → 2026-02-01 (410 months)
Quick Overview
Timeframe C-C DoR σ
(Historical)
H-L DoR σ
(Historical)
O-C DoR σ
(Historical)
5Y ATRP
(Avg)
Binomial IV
(Period)
Yahoo IV
(Period)
1σ Lower
(68.27%)
1σ Upper 2σ Lower
(95.45%)
2σ Upper
Daily 2.93% 2.93% 2.77% 2.11% 1.72% 1.81% 148.81 154.03 146.27 156.71
Weekly 6.36% 6.85% 6.35% 4.89% 3.80% 3.98% 145.76 157.26 140.33 163.34
Monthly 11.45% 13.88% 10.92% 10.59% 7.90% 8.28% 139.90 163.85 129.27 177.32
Quarterly 19.32% 25.51% 18.18% 17.44% 13.68% 14.33% 132.04 173.60 115.15 199.06
Annual 27.37% 28.67% 115.15 199.06 87.58 261.73
Option Time Horizon 10.53% 11.03% 136.27 168.21 122.66 186.88
Calculation Notes: Computed at 2026-02-22T14:18 UTC  |  Reference Contract: Call option expiring 2026-04-17 (54 days)  |  Spot Price (S): $151.40  |  Strike (K): $155.00 (first OTM call ≥ spot)  |  Observed Mid-Price: $5.0000 (Bid $4.8500 / Ask $5.1500)  |  Risk-Free Rate (r): 3.72% (1-Month CMT, US Treasury)  |  Dividend Yield (q): 2.09%  |  Binomial IV (Annual): 27.37% (CRR binomial tree, American, n=20 steps)  |  BS IV: 27.71% (European Black-Scholes)  |  Yahoo IV (Annual): 28.67% → period-scaled as σperiod = σannual·√h  |  Price bands: Upper = S·e+σ√h, Lower = S·e−σ√h
Historical Dividend Payouts
Ex-Dividend Date Amount
2025-12-15 $0.7900
2025-09-15 $0.7900
2025-06-13 $0.7900
2025-03-14 $0.7900
2024-12-13 $0.7700
2024-09-13 $0.7700
2024-06-14 $0.7700
2024-03-14 $0.7700
2023-12-14 $0.7500
2023-09-14 $0.7500
2023-06-14 $0.7500
2023-03-14 $0.7500
2022-12-14 $0.7300
2022-09-14 $0.7300
2022-06-14 $0.7300
2022-03-14 $0.7300
2021-12-14 $0.7100
2021-09-14 $0.7100
2021-06-14 $0.7100
2021-03-12 $0.7100
2020-12-14 $0.6800
2020-09-14 $0.6800
2020-06-11 $0.6800
2020-03-12 $0.6800
2019-12-12 $0.6300
2019-09-12 $0.6300
2019-06-13 $0.6300
2019-03-14 $0.6300
2018-12-13 $0.5700
2018-09-13 $0.5700
2018-06-14 $0.5700
2018-03-15 $0.5700
2017-12-14 $0.5200
2017-09-14 $0.5200
2017-06-14 $0.5200
2017-03-14 $0.5200
2016-12-13 $0.4700
2016-09-14 $0.4700
2016-06-14 $0.4700
2016-03-14 $0.4300
2015-12-14 $0.4300
2015-09-14 $0.4300
2015-06-12 $0.4300
Close-to-Close Returns
Gram-Charlier Analysis: Data reveals Fairly Symmetrical with a Skewness factor of 0.41. Further, an Excess Kurtosis of 6.82 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -8.68%690.81%0.81%
-8.68% to -6.48%891.04%1.84%
-6.48% to -4.29%2512.93%4.77%
-4.29% to -2.09%8329.71%14.48%
-2.09% to 0.11%326538.11%52.59%
0.11% to 2.31%286733.46%86.05%
2.31% to 4.51%7318.53%94.58%
4.51% to 6.71%2352.74%97.33%
6.71% to 8.90%1241.45%98.77%
Greater than 8.90%1051.23%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -2.82%3.04% 80.67%68.27%
±2σ -5.75%5.97% 94.11%95.45%
±3σ -8.68%8.90% 97.97%99.73%
High-to-Low Returns
Gram-Charlier Analysis: Data reveals Highly Right Skewed (Extreme Positive Tail Risk) with a Skewness factor of 2.69. Further, an Excess Kurtosis of 11.70 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -5.15%00.00%0.00%
-5.15% to -2.95%00.00%0.00%
-2.95% to -0.75%00.00%0.00%
-0.75% to 1.45%115813.51%13.51%
1.45% to 3.64%455453.15%66.66%
3.64% to 5.84%152417.79%84.44%
5.84% to 8.04%6687.80%92.24%
8.04% to 10.24%3464.04%96.28%
10.24% to 12.43%1341.56%97.84%
Greater than 12.43%1852.16%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ 0.71%6.57% 87.49%68.27%
±2σ -2.22%9.50% 95.29%95.45%
±3σ -5.15%12.43% 97.84%99.73%
Open-to-Close Returns
Gram-Charlier Analysis: Data reveals Fairly Symmetrical with a Skewness factor of 0.50. Further, an Excess Kurtosis of 7.39 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -8.20%670.78%0.78%
-8.20% to -6.13%1251.46%2.24%
-6.13% to -4.05%2422.82%5.06%
-4.05% to -1.98%7789.08%14.14%
-1.98% to 0.10%328438.32%52.47%
0.10% to 2.17%287733.57%86.04%
2.17% to 4.25%7288.50%94.54%
4.25% to 6.33%2583.01%97.55%
6.33% to 8.40%1191.39%98.94%
Greater than 8.40%911.06%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -2.67%2.87% 80.79%68.27%
±2σ -5.43%5.63% 94.00%95.45%
±3σ -8.20%8.40% 98.16%99.73%
Close-to-Close Returns
Gram-Charlier Analysis: Data reveals Fairly Symmetrical with a Skewness factor of 0.45. Further, an Excess Kurtosis of 4.61 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -18.56%90.51%0.51%
-18.56% to -13.79%261.46%1.97%
-13.79% to -9.02%553.09%5.06%
-9.02% to -4.25%18410.35%15.41%
-4.25% to 0.52%64236.11%51.52%
0.52% to 5.29%61534.59%86.11%
5.29% to 10.06%1377.71%93.81%
10.06% to 14.83%663.71%97.53%
14.83% to 19.60%191.07%98.59%
Greater than 19.60%251.41%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -5.84%6.88% 79.64%68.27%
±2σ -12.20%13.24% 94.04%95.45%
±3σ -18.56%19.60% 98.09%99.73%
High-to-Low Returns
Gram-Charlier Analysis: Data reveals Highly Right Skewed (Extreme Positive Tail Risk) with a Skewness factor of 2.36. Further, an Excess Kurtosis of 8.61 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -11.69%00.00%0.00%
-11.69% to -6.55%00.00%0.00%
-6.55% to -1.41%00.00%0.00%
-1.41% to 3.73%28516.02%16.02%
3.73% to 8.86%89550.31%66.33%
8.86% to 14.00%30917.37%83.70%
14.00% to 19.14%1438.04%91.74%
19.14% to 24.28%734.10%95.84%
24.28% to 29.42%392.19%98.03%
Greater than 29.42%351.97%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ 2.01%15.72% 86.12%68.27%
±2σ -4.84%22.57% 94.72%95.45%
±3σ -11.69%29.42% 98.03%99.73%
Open-to-Close Returns
Gram-Charlier Analysis: Data reveals Right Skewed (Positive Asymmetry) with a Skewness factor of 0.91. Further, an Excess Kurtosis of 7.79 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -19.05%110.62%0.62%
-19.05% to -14.29%221.24%1.85%
-14.29% to -9.52%633.54%5.40%
-9.52% to -4.76%1709.56%14.95%
-4.76% to 0.00%68838.67%53.63%
0.00% to 4.76%56631.82%85.44%
4.76% to 9.53%1659.27%94.72%
9.53% to 14.29%492.75%97.47%
14.29% to 19.05%221.24%98.71%
Greater than 19.05%231.29%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -6.35%6.35% 79.76%68.27%
±2σ -12.70%12.70% 94.10%95.45%
±3σ -19.05%19.05% 98.09%99.73%
Close-to-Close Returns
Gram-Charlier Analysis: Data reveals Right Skewed (Positive Asymmetry) with a Skewness factor of 0.92. Further, an Excess Kurtosis of 3.72 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -32.30%00.00%0.00%
-32.30% to -23.71%61.47%1.47%
-23.71% to -15.13%153.67%5.13%
-15.13% to -6.54%4911.98%17.11%
-6.54% to 2.05%15136.92%54.03%
2.05% to 10.64%12029.34%83.37%
10.64% to 19.23%4410.76%94.13%
19.23% to 27.82%133.18%97.31%
27.82% to 36.40%51.22%98.53%
Greater than 36.40%61.47%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -9.40%13.50% 77.75%68.27%
±2σ -20.85%24.95% 94.38%95.45%
±3σ -32.30%36.40% 98.53%99.73%
High-to-Low Returns
Gram-Charlier Analysis: Data reveals Highly Right Skewed (Extreme Positive Tail Risk) with a Skewness factor of 1.72. Further, an Excess Kurtosis of 2.99 proves the distribution possesses Fat Tails (Higher Outlier Risk).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -21.81%00.00%0.00%
-21.81% to -11.40%00.00%0.00%
-11.40% to -0.99%00.00%0.00%
-0.99% to 9.42%8320.24%20.24%
9.42% to 19.83%18545.12%65.37%
19.83% to 30.24%6616.10%81.46%
30.24% to 40.65%4310.49%91.95%
40.65% to 51.06%143.41%95.37%
51.06% to 61.47%102.44%97.80%
Greater than 61.47%92.20%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ 5.95%33.71% 84.15%68.27%
±2σ -7.93%47.59% 93.66%95.45%
±3σ -21.81%61.47% 97.80%99.73%
Open-to-Close Returns
Gram-Charlier Analysis: Data reveals Fairly Symmetrical with a Skewness factor of 0.46. Further, an Excess Kurtosis of 2.25 proves the distribution possesses Fat Tails (Higher Outlier Risk).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -33.48%20.49%0.49%
-33.48% to -25.29%51.22%1.71%
-25.29% to -17.10%122.93%4.63%
-17.10% to -8.91%5212.68%17.32%
-8.91% to -0.73%13833.66%50.98%
-0.73% to 7.46%13633.17%84.15%
7.46% to 15.65%389.27%93.41%
15.65% to 23.84%174.15%97.56%
23.84% to 32.02%61.46%99.02%
Greater than 32.02%40.98%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -11.64%10.19% 77.56%68.27%
±2σ -22.56%21.11% 93.41%95.45%
±3σ -33.48%32.02% 98.54%99.73%
Close-to-Close Returns
Gram-Charlier Analysis: Data reveals Right Skewed (Positive Asymmetry) with a Skewness factor of 0.68. Further, an Excess Kurtosis of 1.99 proves the distribution possesses Fat Tails (Higher Outlier Risk).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -51.92%00.00%0.00%
-51.92% to -37.43%21.46%1.46%
-37.43% to -22.94%42.92%4.38%
-22.94% to -8.44%2115.33%19.71%
-8.44% to 6.05%4230.66%50.36%
6.05% to 20.54%4230.66%81.02%
20.54% to 35.03%1813.14%94.16%
35.03% to 49.53%42.92%97.08%
49.53% to 64.02%21.46%98.54%
Greater than 64.02%21.46%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -13.28%25.37% 74.45%68.27%
±2σ -32.60%44.70% 93.43%95.45%
±3σ -51.92%64.02% 98.54%99.73%
High-to-Low Returns
Gram-Charlier Analysis: Data reveals Highly Right Skewed (Extreme Positive Tail Risk) with a Skewness factor of 1.82. Further, an Excess Kurtosis of 3.62 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -40.59%00.00%0.00%
-40.59% to -21.46%00.00%0.00%
-21.46% to -2.33%00.00%0.00%
-2.33% to 16.80%3021.74%21.74%
16.80% to 35.93%6244.93%66.67%
35.93% to 55.06%2316.67%83.33%
55.06% to 74.19%117.97%91.30%
74.19% to 93.32%53.62%94.93%
93.32% to 112.45%53.62%98.55%
Greater than 112.45%21.45%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ 10.42%61.44% 86.23%68.27%
±2σ -15.09%86.95% 94.20%95.45%
±3σ -40.59%112.45% 98.55%99.73%
Open-to-Close Returns
Gram-Charlier Analysis: Data reveals Highly Right Skewed (Extreme Positive Tail Risk) with a Skewness factor of 1.03. Further, an Excess Kurtosis of 2.54 proves the distribution possesses Fat Tails (Higher Outlier Risk).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -56.81%00.00%0.00%
-56.81% to -43.17%10.72%0.72%
-43.17% to -29.53%53.62%4.35%
-29.53% to -15.90%2115.22%19.57%
-15.90% to -2.26%5136.96%56.52%
-2.26% to 11.38%3626.09%82.61%
11.38% to 25.01%1611.59%94.20%
25.01% to 38.65%32.17%96.38%
38.65% to 52.28%21.45%97.83%
Greater than 52.28%32.17%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -20.44%15.92% 77.54%68.27%
±2σ -38.62%34.10% 94.93%95.45%
±3σ -56.81%52.28% 97.83%99.73%