GILD Deep Analytical Report

Gilead Sciences, Inc. | Category: Equity Mega Cap | Ann. Div Yield: 2.30% ($3.16) | Last Updated: 2026-03-24 | Data Range: 1992-01-01 → 2026-03-01 (411 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% 2.76% 2.12% 2.15% 2.22% 134.52 140.44 131.65 143.50
Weekly 6.35% 6.85% 6.35% 4.89% 4.74% 4.89% 131.08 144.13 125.01 151.13
Monthly 11.44% 13.87% 10.91% 10.60% 9.87% 10.19% 124.53 151.71 112.82 167.46
Quarterly 19.34% 25.49% 18.18% 17.56% 17.10% 17.64% 115.84 163.09 97.63 193.50
Annual 34.20% 35.29% 97.63 193.50 69.35 272.41
Option Time Horizon 12.91% 13.32% 120.80 156.39 106.17 177.94
Calculation Notes: Computed at 2026-03-23T16:33 UTC  |  Reference Contract: Call option expiring 2026-05-15 (52 days)  |  Spot Price (S): $137.45  |  Strike (K): $140.00 (first OTM call ≥ spot)  |  Observed Mid-Price: $6.1000 (Bid $5.9000 / Ask $6.3000)  |  Risk-Free Rate (r): 3.73% (1-Month CMT, US Treasury)  |  Dividend Yield (q): 2.30%  |  Binomial IV (Annual): 34.20% (CRR binomial tree, American, n=20 steps)  |  BS IV: 34.51% (European Black-Scholes)  |  Yahoo IV (Annual): 35.29% → 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
2026-03-13 $0.8200
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 6.83 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -8.68%690.80%0.80%
-8.68% to -6.48%901.05%1.85%
-6.48% to -4.28%2502.91%4.76%
-4.28% to -2.09%8359.72%14.48%
-2.09% to 0.11%327538.13%52.61%
0.11% to 2.31%287333.45%86.06%
2.31% to 4.50%7338.53%94.60%
4.50% to 6.70%2352.74%97.33%
6.70% to 8.90%1231.43%98.77%
Greater than 8.90%1061.23%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -2.82%3.04% 80.72%68.27%
±2σ -5.75%5.97% 94.12%95.45%
±3σ -8.68%8.90% 97.96%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 11.73 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -5.14%00.00%0.00%
-5.14% to -2.95%00.00%0.00%
-2.95% to -0.75%00.00%0.00%
-0.75% to 1.45%115813.48%13.48%
1.45% to 3.64%457053.20%66.68%
3.64% to 5.83%152817.79%84.47%
5.83% to 8.03%6687.78%92.25%
8.03% to 10.23%3464.03%96.27%
10.23% to 12.42%1341.56%97.83%
Greater than 12.42%1862.17%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ 0.71%6.57% 87.52%68.27%
±2σ -2.21%9.49% 95.27%95.45%
±3σ -5.14%12.42% 97.83%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 7.40 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -8.19%680.79%0.79%
-8.19% to -6.12%1251.46%2.25%
-6.12% to -4.05%2422.82%5.06%
-4.05% to -1.97%7819.09%14.16%
-1.97% to 0.10%328838.28%52.43%
0.10% to 2.17%288933.63%86.07%
2.17% to 4.25%7278.46%94.53%
4.25% to 6.32%2593.02%97.54%
6.32% to 8.39%1191.39%98.93%
Greater than 8.39%921.07%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -2.66%2.86% 80.78%68.27%
±2σ -5.43%5.63% 93.98%95.45%
±3σ -8.19%8.39% 98.14%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 4.62 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -18.55%90.51%0.51%
-18.55% to -13.78%261.46%1.96%
-13.78% to -9.02%553.09%5.05%
-9.02% to -4.25%18410.33%15.38%
-4.25% to 0.51%64636.25%51.63%
0.51% to 5.28%61334.40%86.03%
5.28% to 10.04%1387.74%93.77%
10.04% to 14.81%673.76%97.53%
14.81% to 19.57%191.07%98.60%
Greater than 19.57%251.40%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -5.84%6.87% 79.63%68.27%
±2σ -12.20%13.22% 94.05%95.45%
±3σ -18.55%19.58% 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 8.64 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -11.68%00.00%0.00%
-11.68% to -6.55%00.00%0.00%
-6.55% to -1.41%00.00%0.00%
-1.41% to 3.72%28515.98%15.98%
3.72% to 8.86%89850.36%66.35%
8.86% to 13.99%30917.33%83.68%
13.99% to 19.13%1448.08%91.76%
19.13% to 24.26%724.04%95.79%
24.26% to 29.39%402.24%98.04%
Greater than 29.39%351.96%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ 2.01%15.70% 86.20%68.27%
±2σ -4.84%22.55% 94.73%95.45%
±3σ -11.68%29.39% 98.04%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 7.80 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -19.03%110.62%0.62%
-19.03% to -14.27%221.23%1.85%
-14.27% to -9.51%633.53%5.38%
-9.51% to -4.75%1709.53%14.92%
-4.75% to 0.01%68938.64%53.56%
0.01% to 4.77%57031.97%85.53%
4.77% to 9.53%1649.20%94.73%
9.53% to 14.29%472.64%97.36%
14.29% to 19.05%241.35%98.71%
Greater than 19.05%231.29%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -6.34%6.35% 79.75%68.27%
±2σ -12.68%12.70% 94.05%95.45%
±3σ -19.03%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 3.73 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -32.31%00.00%0.00%
-32.31% to -23.73%61.46%1.46%
-23.73% to -15.14%153.66%5.12%
-15.14% to -6.56%5012.20%17.32%
-6.56% to 2.02%15136.83%54.15%
2.02% to 10.61%12029.27%83.41%
10.61% to 19.19%4410.73%94.15%
19.19% to 27.77%133.17%97.32%
27.77% to 36.35%51.22%98.54%
Greater than 36.35%61.46%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -9.42%13.47% 77.56%68.27%
±2σ -20.87%24.91% 94.39%95.45%
±3σ -32.31%36.35% 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 1.72. Further, an Excess Kurtosis of 3.00 proves the distribution possesses Fat Tails (Higher Outlier Risk).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -21.80%00.00%0.00%
-21.80% to -11.40%00.00%0.00%
-11.40% to -1.00%00.00%0.00%
-1.00% to 9.40%8219.95%19.95%
9.40% to 19.80%18745.50%65.45%
19.80% to 30.21%6616.06%81.51%
30.21% to 40.61%4310.46%91.97%
40.61% to 51.01%133.16%95.13%
51.01% to 61.41%112.68%97.81%
Greater than 61.41%92.19%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ 5.94%33.67% 84.18%68.27%
±2σ -7.93%47.55% 93.67%95.45%
±3σ -21.80%61.41% 97.81%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 -33.43%20.49%0.49%
-33.43% to -25.25%51.22%1.70%
-25.25% to -17.07%133.16%4.87%
-17.07% to -8.88%5212.65%17.52%
-8.88% to -0.70%13833.58%51.09%
-0.70% to 7.48%13532.85%83.94%
7.48% to 15.66%399.49%93.43%
15.66% to 23.85%174.14%97.57%
23.85% to 32.03%61.46%99.03%
Greater than 32.03%40.97%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -11.61%10.21% 77.62%68.27%
±2σ -22.52%21.12% 93.43%95.45%
±3σ -33.43%32.03% 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 -52.04%00.00%0.00%
-52.04% to -37.54%21.46%1.46%
-37.54% to -23.03%42.92%4.38%
-23.03% to -8.53%2115.33%19.71%
-8.53% to 5.98%4331.39%51.09%
5.98% to 20.48%4129.93%81.02%
20.48% to 34.99%1813.14%94.16%
34.99% to 49.49%42.92%97.08%
49.49% to 64.00%21.46%98.54%
Greater than 64.00%21.46%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -13.36%25.32% 74.45%68.27%
±2σ -32.70%44.66% 93.43%95.45%
±3σ -52.04%64.00% 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 1.83. Further, an Excess Kurtosis of 3.63 proves the distribution possesses Extreme Fat Tails (Frequent Outliers, Leptokurtic).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -40.52%00.00%0.00%
-40.52% to -21.40%00.00%0.00%
-21.40% to -2.28%00.00%0.00%
-2.28% to 16.84%3021.74%21.74%
16.84% to 35.95%6244.93%66.67%
35.95% to 55.07%2316.67%83.33%
55.07% to 74.19%117.97%91.30%
74.19% to 93.30%53.62%94.93%
93.30% to 112.42%53.62%98.55%
Greater than 112.42%21.45%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ 10.46%61.44% 86.23%68.27%
±2σ -15.03%86.93% 94.20%95.45%
±3σ -40.52%112.42% 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 1.02. Further, an Excess Kurtosis of 2.52 proves the distribution possesses Fat Tails (Higher Outlier Risk).
Bin Distribution Over Raw Range
Bin / RangeFrequencyProbCum. Prob
Less than -56.74%00.00%0.00%
-56.74% to -43.10%10.72%0.72%
-43.10% to -29.47%53.62%4.35%
-29.47% to -15.83%2115.22%19.57%
-15.83% to -2.19%5036.23%55.80%
-2.19% to 11.44%3726.81%82.61%
11.44% to 25.08%1611.59%94.20%
25.08% to 38.72%32.17%96.38%
38.72% to 52.35%21.45%97.83%
Greater than 52.35%32.17%100.00%
Standard Deviation Interval Analysis
SDLower BndUpper Bnd Actual %Normal %
±1σ -20.38%15.99% 78.26%68.27%
±2σ -38.56%34.17% 94.93%95.45%
±3σ -56.74%52.35% 97.83%99.73%