Tour v452
BIIB
BIOGEN INC
$205.61 +2.73%
$209.00 (+1.65%)🌙
as of 07/28 06:00 PM
(7/28 14:05) ◀
|
Tuesday, July 28, 2026 (6:00pm)
January 2026
|
▶ (7/29 09:35)
◀ 7/28 18:00 ▶

Option Volume

Detail
ℹ
Current (07/28) 2,479
Calls: 1,170 (47%)
Puts: 1,309 (53%)
Prior (07/27) 413
Calls: 134 (32%)
Puts: 279 (68%)
Current vs Prior +500.24%
Calls: +773.13% (Calls)
Puts: +369.18% (Puts)
Prior 7-Day Total 6,791
Calls: 3,943 (58%)
Puts: 2,848 (42%)
Prior 7-Day Average 970
Calls: 563 (58%)
Puts: 406 (42%)
Current vs Prior 7-Day Avg +155.53%
Calls: +107.71%
Puts: +221.73%
Sentiment BEARISH

Dollar Volume

Detail
ℹ
Current (07/28) $1.71M
Calls: $1.12M (66%)
Puts: $586.3K (34%)
Prior (07/27) $503.8K
Calls: $66.5K (13%)
Puts: $437.2K (87%)
Current vs Prior +239.32%
Calls: +1588.03%
Puts: +34.09%
Prior 7-Day Total $6.17M
Calls: $4.73M (77%)
Puts: $1.44M (23%)
Prior 7-Day Average $881.8K
Calls: $675.4K (77%)
Puts: $206.3K (23%)
Current vs Prior 7-Day Avg +93.86%
Calls: +66.28%
Puts: +184.16%
Sentiment BULLISH

Put/Call Ratio

Detail
ℹ
Current (07/28) 1.12
Prior (07/27) 2.08
Current vs Prior -46.27%
Prior 7-Day Average 1.26
Current vs Prior 7-Day Avg -11.45%
Sentiment BEARISH

Open Interest

Detail
ℹ
Current (07/28) 41,944
Calls: 22,874 (55%)
Puts: 19,070 (45%)
Prior (07/27) 2,986
Calls: 1,777 (60%)
Puts: 1,209 (40%)
Current vs Prior +1304.69%
Prior 7-Day Total 53,898
Calls: 35,712 (66%)
Puts: 18,186 (34%)
Prior 7-Day Average 7,699
Calls: 5,101 (66%)
Puts: 2,598 (34%)
Current vs Prior 7-Day Avg +444.75%
Sentiment BEARISH

Expected Move

Detail
ℹ
Expiry (07/31) | Next (08/07)Expiry (08/21) | Next (09/18)
Current 5.08% | 7.05%9.09% | 13.86%
Prior 6.10% | 7.39%9.24% | 14.79%
Current vs Prior -16.62% | -4.63%-1.61% | -6.28%
Prior 7-Day Avg 4.49% | 7.68%8.95% | 14.07%
Current vs 7-Day Avg +13.22% | -8.19%+1.56% | -1.47%
Prior 7-Day Eod 6.10% | 7.39%9.24% | 14.79%
Current vs 7-Day Eod -16.62% | -4.63%-1.61% | -6.28%
Sentiment BULLISHBULLISH

Relative Spread

Detail
ℹ
Expiry | Next
Current 21.32% | 27.11%
Calls: 21.43% | 28.57%
Puts: 21.21% | 25.64%
Prior 114.07% | 61.49%
Calls: 98.96% | 51.55%
Puts: 129.19% | 71.43%
Current vs Prior -81.31% | -55.91%
Prior 7-Day Avg 114.07% | 61.49%
Calls: 98.96% | 51.55%
Puts: 129.19% | 71.43%
Current vs 7-Day Avg -81.31% | -55.91%
Liquidity Expensive
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🤖 AI Insights

Moderately bullish flow with 66% call dollar volume ($1.12M). Massive premium surge with dollar volume up 239% vs prior. Dollar volume significantly above 7-day average (94% higher). Unusually high activity with volume up 500% vs prior - elevated interest.

Smart Money BULLISH
Retail Flow BEARISH
Overall BEARISH
Dollar Volume
Option Volume
Put/Call Ratio
Open Interest
Expected Move
Current BULLISH
Prior BEARISH
7-Day Avg BULLISH
Current NEUTRAL
Prior BEARISH
7-Day Avg NEUTRAL
Current NEUTRAL
Prior BEARISH
7-Day Avg NEUTRAL
Current NEUTRAL
Prior BULLISH
7-Day Avg NEUTRAL
Current BEARISH
Prior BULLISH
7-Day Avg BULLISH

📈 Options Analysis

🎯 Tightest Spreads
💰 Best Value Under $1
📊 High Delta (ITM)
🔥 High Volume
⏰ Backwardation
📈 Debit Spreads
📉 Credit Spreads
📅 Calendar Spreads
⚡ Straddles
🔀 Strangles
🦅 Iron Condors
🦋 Butterflies
⚖️ Ratio Spreads
🛡️ Covered Calls

Options with the tightest bid-ask spreads (<10%). Lower spreads = better fills and less slippage. Showing top 2 of results (avg 9.3%, best 8.9%)

CALLS (1)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$170.00Aug 2136.6040.00$38.308.9%--0.94606
PUTS (1)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$240.00Aug 2132.0035.30$33.659.8%--0.9511

Affordable options under $1.00 per contract. Great for defined-risk strategies with minimal capital. -- found (avg $--, cheapest $--)

No options available for this category

In-the-money options with delta >0.50. Higher probability of profit, lower leverage. 34 found (avg delta 0.71, highest 0.98)

CALLS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$180.00Jul 3125.7029.00$27.3512.1%--0.9815
$170.00Aug 2136.6040.00$38.308.9%--0.94606
$190.00Jul 3115.4019.50$17.4523.5%90.9220
$180.00Aug 725.0029.50$27.2516.5%--0.9010
$175.00Aug 2130.5035.00$32.7513.7%--0.90290
PUTS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$240.00Aug 2132.0035.30$33.659.8%--0.9511
$215.00Jul 318.5011.70$10.1031.7%100.7310
$220.00Aug 2114.7017.90$16.3019.6%--0.7110
$215.00Aug 79.5012.90$11.2030.4%--0.7010
$212.50Jul 316.9010.00$8.4536.7%10.68--

Most actively traded options today. High liquidity = easy entry/exit. 63 active (total vol 1.6K, top 270)

CALLS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$202.50Aug 77.5011.00$9.2537.8%2350.64--
$200.00Aug 79.0012.50$10.7532.6%2340.703
$205.00Jul 314.007.30$5.6558.4%1150.5539
$220.00Aug 212.005.90$3.9598.7%1020.30375
$202.50Jul 316.009.50$7.7545.2%970.6221
PUTS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$180.00Jul 310.000.25$0.13192.3%2700.029
$195.00Jul 310.003.50$1.75200.0%1680.2114
$202.50Aug 214.708.50$6.6057.6%500.41--
$200.00Jul 310.503.20$1.85145.9%400.2720
$197.50Jul 310.004.10$2.05200.0%240.252

Term structure inversion — near-term IV higher than far-term IV at the same strike. Signals expected near-term catalyst or volatility event. 31 strikes (avg 80.1%, max 183.0%)

CALLS (5)
StrikeNear ExpFar ExpNear IVFar IVBack%VolOI
$240.00Jul 31Aug 21113.8%40.2%183.0%6250
$235.00Jul 31Aug 21101.8%39.9%154.9%4241
$227.50Jul 31Aug 21100.0%42.3%136.2%156
$220.00Jul 31Aug 2884.3%39.9%111.2%1869
$222.50Jul 31Aug 2187.7%41.6%111.1%88
PUTS (5)
StrikeNear ExpFar ExpNear IVFar IVBack%VolOI
$175.00Jul 31Aug 21145.3%56.0%159.6%--62
$195.00Jul 31Aug 2179.0%43.1%83.2%16896
$215.00Jul 31Aug 1476.9%42.4%81.5%1020
$187.50Jul 31Aug 7103.5%60.0%72.5%1319
$202.50Jul 31Aug 2170.1%40.8%71.6%531

Bull call spreads & bear put spreads with the best risk/reward ratios. Pay a debit upfront, defined max loss. 65 found (best R:R 29.00, avg 4.71)

BULL CALL (5)
BuySellExpiryDebitMax GainMax LossR:RBE
$235.00$240.00Aug 7$0.17$4.83$0.1728.41$235.17
$215.00$217.50Aug 21$0.12$2.38$0.1219.83$215.12
$220.00$235.00Aug 7$0.80$14.20$0.8017.75$220.80
$225.00$230.00Aug 14$0.32$4.68$0.3214.63$225.32
$235.00$240.00Aug 21$0.38$4.62$0.3812.16$235.38
BEAR PUT (5)
BuySellExpiryDebitMax GainMax LossR:RBE
$187.50$180.00Aug 7$0.25$7.25$0.2529.00$187.25
$185.00$180.00Jul 31$0.27$4.73$0.2717.52$184.73
$190.00$185.00Aug 21$0.30$4.70$0.3015.67$189.70
$190.00$187.50Aug 7$0.20$2.30$0.2011.50$189.80
$195.00$190.00Aug 7$0.53$4.47$0.538.43$194.47

Bear call spreads & bull put spreads collecting premium. Receive credit upfront, profit if stock stays in range. 77 found (best R:R 11.50, avg 1.30)

BEAR CALL (5)
SellBuyExpiryCreditMax GainMax LossR:RBE
$192.50$195.00Jul 31$2.30$2.30$0.2011.50$194.80
$175.00$190.00Aug 21$13.00$13.00$2.006.50$188.00
$202.50$205.00Jul 31$2.10$2.10$0.405.25$204.60
$180.00$200.00Aug 7$16.50$16.50$3.504.71$196.50
$195.00$200.00Jul 31$4.00$4.00$1.004.00$199.00
BULL PUT (5)
SellBuyExpiryCreditMax GainMax LossR:RBE
$240.00$220.00Aug 21$17.35$17.35$2.656.55$222.65
$212.50$210.00Jul 31$1.85$1.85$0.652.85$210.65
$210.00$207.50Jul 31$1.80$1.80$0.702.57$208.20
$202.50$200.00Jul 31$1.65$1.65$0.851.94$200.85
$215.00$212.50Jul 31$1.65$1.65$0.851.94$213.35

Same strike, different expirations. Sell near-term, buy far-term. Profits from time decay differential. 30 found (avg debit $1.32, cheapest $0.10)

CALLS (5)
StrikeNear ExpFar ExpNet DebitNear IVFar IV
$220.00Jul 31Aug 7$0.3784.3%46.5%
$240.00Jul 31Aug 7$0.45113.8%67.7%
$235.00Jul 31Aug 7$0.62101.8%63.2%
$215.00Jul 31Aug 7$1.0076.9%46.6%
$227.50Jul 31Aug 21$1.09100.0%42.3%
PUTS (5)
StrikeNear ExpFar ExpNet DebitNear IVFar IV
$187.50Jul 31Aug 7$0.10103.5%60.0%
$175.00Jul 31Aug 21$0.42145.3%56.0%
$195.00Jul 31Aug 7$0.5379.0%51.1%
$205.00Jul 31Aug 7$0.6068.0%45.4%
$197.50Jul 31Aug 7$0.9073.3%51.1%

Buy call + put at the same strike and expiry. Profits from large moves in either direction. 26 found (cheapest 4.55% of stock, avg 8.89%)

StrikeExpiryCall$Put$TotalBE LowBE HighCost%
$207.50Jul 31$4.55$4.80$9.35$198.15$216.854.55%
$205.00Jul 31$5.65$4.45$10.10$194.90$215.104.91%
$210.00Jul 31$3.50$6.60$10.10$199.90$220.104.91%
$212.50Jul 31$2.70$8.45$11.15$201.35$223.655.42%
$200.00Jul 31$9.40$1.85$11.25$188.75$211.255.47%
$202.50Jul 31$7.75$3.50$11.25$191.25$213.755.47%
$215.00Jul 31$2.40$10.10$12.50$202.50$227.506.08%
$210.00Aug 7$4.65$7.90$12.55$197.45$222.556.10%
$205.00Aug 7$7.75$5.05$12.80$192.20$217.806.23%
$202.50Aug 7$9.25$4.47$13.72$188.78$216.226.67%

Buy OTM call + OTM put at different strikes. Cheaper than straddles, needs bigger move to profit. 88 found (cheapest 1.69% of stock, avg 3.55%)

Call KPut KExpiryCall$Put$TotalBE LowBE High
$220.00$195.00Jul 31$1.73$1.75$3.48$191.52$223.48
$220.00$200.00Jul 31$1.73$1.85$3.58$196.42$223.58
$235.00$195.00Aug 7$1.30$2.28$3.58$191.42$238.58
$220.00$197.50Jul 31$1.73$2.05$3.78$193.72$223.78
$215.00$195.00Jul 31$2.40$1.75$4.15$190.85$219.15
$215.00$200.00Jul 31$2.40$1.85$4.25$195.75$219.25
$235.00$197.50Aug 7$1.30$2.95$4.25$193.25$239.25
$220.00$195.00Aug 7$2.10$2.28$4.38$190.62$224.38
$212.50$195.00Jul 31$2.70$1.75$4.45$190.55$216.95
$215.00$197.50Jul 31$2.40$2.05$4.45$193.05$219.45

Sell OTM put spread + OTM call spread. Collect premium, profit if stock stays between breakevens. 143 found (best R:R 24.00, avg credit $2.17)

Put SpreadCall SpreadExpiryCreditMax LossR:RBE LowBE High
195/198202/205Jul 31$2.40$0.1024.00$195.10$204.90
198/200205/208Aug 7$2.38$0.1219.83$197.62$207.38
190/195200/205Aug 21$4.72$0.2816.86$190.28$204.72
200/202208/210Aug 7$2.24$0.268.62$200.26$209.74
180/185190/195Aug 21$4.48$0.528.62$180.52$194.48
180/185200/205Aug 21$4.48$0.528.62$180.52$204.48
180/185195/200Aug 21$4.43$0.577.77$180.57$199.43
195/198200/202Aug 7$2.17$0.336.58$195.33$202.17
195/198202/205Aug 7$2.17$0.336.58$195.33$204.67
185/188205/208Jul 31$2.15$0.356.14$185.35$207.15

Buy lower + upper strikes, sell 2x middle strike. Low cost, max profit at the middle strike at expiry. 24 found (best R:R 99.00, cheapest $0.05)

CALLS (5)
LowMidHighExpiryDebitMax GainR:R
$190.00$195.00$200.00Aug 21$0.05$4.9599.00
$205.00$207.50$210.00Jul 31$0.05$2.4549.00
$235.00$240.00$245.00Aug 7$0.24$4.7619.83
$222.50$225.00$227.50Aug 21$0.12$2.3819.83
$220.00$222.50$225.00Aug 21$0.15$2.3515.67
PUTS (5)
LowMidHighExpiryDebitMax GainR:R
$207.50$210.00$212.50Jul 31$0.05$2.4549.00
$205.00$210.00$215.00Aug 7$0.45$4.5510.11
$197.50$200.00$202.50Aug 7$0.36$2.145.94
$195.00$200.00$205.00Aug 14$0.88$4.124.68
$185.00$190.00$195.00Aug 21$1.12$3.883.46

Buy 1 option, sell 2 at a different strike (1:2 ratio). Can be entered for a credit. Unlimited risk on naked leg. 61 found (best net $-0.50, 51 credits)

CALLS (5)
Buy KSell KRatioExpiryNetMax Gain
$220.00$235.001:2Aug 7-$0.50$14.50
$175.00$190.001:2Aug 21-$6.75$8.25
$235.00$240.001:2Aug 21-$0.37$4.63
$235.00$240.001:2Jul 31-$0.68$4.32
$215.00$220.001:2Aug 7-$0.80$4.20
PUTS (5)
Buy KSell KRatioExpiryNetMax Gain
$215.00$205.001:2Aug 14-$1.75$8.25
$187.50$180.001:2Aug 7-$1.05$6.45
$220.00$210.001:2Aug 21-$3.70$6.30
$185.00$180.001:2Aug 21-$0.12$4.88
$175.00$170.001:2Aug 21-$0.15$4.85

Sell OTM calls against 100 shares you own. Collect premium for income, capped upside at strike. Yield% = premium/stock price. 24 found (best yield 2.77%, avg 0.91%)

StrikeExpiryBidDeltaOTM%Yield%If Called%VolOI
$210.00Aug 21$5.700.472.1%2.77%4.91%13207
$207.50Aug 7$4.500.520.9%2.19%3.11%11
$207.50Jul 31$3.500.470.9%1.70%2.62%1215
$215.00Aug 21$3.500.364.6%1.70%6.27%118
$210.00Aug 7$3.100.452.1%1.51%3.64%64
$210.00Jul 31$3.000.402.1%1.46%3.59%1534
$220.00Aug 28$2.650.337.0%1.29%8.29%--14
$217.50Aug 21$2.550.345.8%1.24%7.02%14
$212.50Aug 7$2.500.403.4%1.22%4.57%1--
$215.00Aug 14$2.000.344.6%0.97%5.54%152

Current 5-Minute Volume Snapshots

Time (HH:MM) Total Volume Call Volume Put Volume Volume Change
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Prior's 5-Minute Volume Snapshots

Time (HH:MM) Total Volume Call Volume Put Volume Volume Change
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Current Put/Call Breakdown

Total Calls 1,170
Total Puts 1,309
Put/Call Ratio 1.12
Net Difference -139

Prior's Put/Call Breakdown

Total Calls 134
Total Puts 279
Put/Call Ratio 2.08
Net Difference -145

Prior 7-Day Put/Call Summary

Total Calls 3,943
Total Puts 2,848
Average Put/Call Ratio 1.26
Ratio Trend Falling

Daily Put/Call History (Last 7 Days)

Date Calls Puts Ratio Net Diff
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Upcoming Earnings - 2 Weeks Prior

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Upcoming Earnings - 1 Week Prior

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Earnings This Week

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Earnings - Day Before / Day After

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Options Activity Around Earnings

Ticker Earnings Date Days Away Call Volume Put Volume IV Rank
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Chart Title

Price — Past 7 Days

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