Tour v477
BIIB
BIOGEN INC
$202.95 -2.40%
$202.70 (-0.12%)🌙
as of 07/31 06:16 PM
(7/30 18:23) ◀
|
Friday, July 31, 2026 (6:16pm)
January 2026
|
▶ (8/3 18:15)
◀ 7/31 18:16 ▶

Option Volume

Detail
ℹ
Current (07/31) 1,212
Calls: 893 (74%)
Puts: 319 (26%)
Prior (07/30) 1,265
Calls: 777 (61%)
Puts: 488 (39%)
Current vs Prior -4.19%
Calls: +14.93% (Calls)
Puts: -34.63% (Puts)
Prior 7-Day Total 9,417
Calls: 4,579 (49%)
Puts: 4,838 (51%)
Prior 7-Day Average 1,345
Calls: 654 (49%)
Puts: 691 (51%)
Current vs Prior 7-Day Avg -9.91%
Calls: +36.51%
Puts: -53.84%
Sentiment BULLISH

Dollar Volume

Detail
ℹ
Current (07/31) $499.2K
Calls: $240.5K (48%)
Puts: $258.7K (52%)
Prior (07/30) $1.73M
Calls: $961.0K (55%)
Puts: $773.6K (45%)
Current vs Prior -71.22%
Calls: -74.97%
Puts: -66.56%
Prior 7-Day Total $7.32M
Calls: $3.98M (54%)
Puts: $3.34M (46%)
Prior 7-Day Average $1.05M
Calls: $568.5K (54%)
Puts: $477.5K (46%)
Current vs Prior 7-Day Avg -52.27%
Calls: -57.69%
Puts: -45.82%
Sentiment BEARISH

Put/Call Ratio

Detail
ℹ
Current (07/31) 0.36
Prior (07/30) 0.63
Current vs Prior -43.12%
Prior 7-Day Average 1.42
Current vs Prior 7-Day Avg -74.92%
Sentiment BULLISH

Open Interest

Detail
ℹ
Current (07/31) 9,856
Calls: 8,212 (83%)
Puts: 1,644 (17%)
Prior (07/30) 7,325
Calls: 5,470 (75%)
Puts: 1,855 (25%)
Current vs Prior +34.55%
Prior 7-Day Total 116,131
Calls: 66,407 (57%)
Puts: 49,724 (43%)
Prior 7-Day Average 16,590
Calls: 9,486 (57%)
Puts: 7,103 (43%)
Current vs Prior 7-Day Avg -40.59%
Sentiment BEARISH

Expected Move

Detail
ℹ
Expiry (07/31) | Next (08/07)Expiry (08/21) | Next (09/18)
Current 1.54% | 4.24%7.44% | 12.64%
Prior 2.95% | 4.54%7.53% | 12.53%
Current vs Prior +43.74% | +38.77%-1.15% | +0.88%
Prior 7-Day Avg 4.37% | 6.78%9.18% | 13.81%
Current vs 7-Day Avg -3.09% | -6.99%-18.92% | -8.48%
Prior 7-Day Eod 2.95% | 4.54%7.53% | 12.53%
Current vs 7-Day Eod +43.74% | +38.77%-1.15% | +0.88%
Sentiment BEARISHBULLISH

Relative Spread

Detail
ℹ
Expiry | Next
Current 229.41% | 28.88%
Calls: 47.07% | 38.89%
Puts: 411.76% | 18.87%
Prior 229.41% | 28.88%
Calls: 47.07% | 38.89%
Puts: 411.76% | 18.87%
Current vs Prior +0.00% | +0.00%
Prior 7-Day Avg 133.77% | 47.26%
Calls: 73.06% | 44.65%
Puts: 194.50% | 49.87%
Current vs 7-Day Avg +71.49% | -38.89%
Liquidity Expensive
+
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🤖 AI Insights

Light premium activity with dollar volume down 71% vs prior. Extreme bullish P/C ratio of 0.36 - heavy call buying (893 calls vs 319 puts). P/C ratio dropping 43% - sentiment shifting bullish. Call-heavy open interest (8,212 calls vs 1,644 puts) suggests bullish positioning.

Smart Money BEARISH
Retail Flow BULLISH
Overall BULLISH
Dollar Volume
Option Volume
Put/Call Ratio
Open Interest
Expected Move
Current BEARISH
Prior BULLISH
7-Day Avg BULLISH
Current BULLISH
Prior BULLISH
7-Day Avg NEUTRAL
Current BULLISH
Prior BULLISH
7-Day Avg NEUTRAL
Current BULLISH
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 -- of results (avg --%, best --%)

No options available for this category

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. 15 found (avg delta 0.72, highest 1.00)

CALLS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$195.00Jul 317.109.90$8.5032.9%131.0066
$205.00Jul 310.002.20$1.10200.0%41.00--
$195.00Aug 78.2011.00$9.6029.2%100.88--
$200.00Jul 311.655.10$3.38102.1%30.77--
$200.00Aug 74.907.50$6.2041.9%70.70219
PUTS (4)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$205.00Jul 310.053.40$1.73193.6%151.0065
$207.50Jul 312.455.50$3.9876.6%30.7316
$210.00Aug 147.6010.70$9.1533.9%190.666
$205.00Aug 144.807.80$6.3047.6%30.5231

Most actively traded options today. High liquidity = easy entry/exit. 52 active (total vol 745, top 228)

CALLS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$220.00Aug 140.901.50$1.2050.0%2280.1617
$215.00Aug 70.002.45$1.23199.2%1510.19569
$220.00Aug 70.000.65$0.33197.0%550.07--
$205.00Aug 72.404.30$3.3556.7%230.4715
$217.50Aug 140.802.90$1.85113.5%210.211
PUTS (5)
StrikeExpiryBidAskMarkSpreadVolDeltaOI
$195.00Aug 141.452.50$1.9853.0%280.2470
$185.00Aug 70.001.05$0.53198.1%250.08--
$210.00Aug 147.6010.70$9.1533.9%190.666
$205.00Jul 310.053.40$1.73193.6%151.0065
$195.00Jul 310.000.05$0.03166.7%100.02177

Term structure inversion — near-term IV higher than far-term IV at the same strike. Signals expected near-term catalyst or volatility event. 13 strikes (avg 1008.2%, max 2304.3%)

CALLS (5)
StrikeNear ExpFar ExpNear IVFar IVBack%VolOI
$220.00Jul 31Aug 21980.0%40.8%2304.3%4479
$212.50Jul 31Aug 14696.9%35.1%1884.9%3--
$210.00Jul 31Aug 14613.1%37.6%1529.8%1454
$207.50Jul 31Aug 14471.1%37.3%1163.7%77
$195.00Jul 31Aug 7248.6%28.9%758.7%2366
PUTS (4)
StrikeNear ExpFar ExpNear IVFar IVBack%VolOI
$185.00Jul 31Aug 71095.6%51.6%2022.5%3065
$197.50Jul 31Aug 14536.9%38.7%1288.4%425
$200.00Jul 31Aug 14264.6%34.2%674.5%578
$195.00Jul 31Aug 14248.6%34.0%632.0%38247

Bull call spreads & bear put spreads with the best risk/reward ratios. Pay a debit upfront, defined max loss. 28 found (best R:R 32.33, avg 5.75)

BULL CALL (5)
BuySellExpiryDebitMax GainMax LossR:RBE
$220.00$225.00Aug 7$0.15$4.85$0.1532.33$220.15
$210.00$212.50Jul 31$0.12$2.38$0.1219.83$210.12
$220.00$230.00Aug 21$0.75$9.25$0.7512.33$220.75
$215.00$217.50Aug 14$0.20$2.30$0.2011.50$215.20
$230.00$240.00Aug 21$0.82$9.18$0.8211.20$230.82
BEAR PUT (5)
BuySellExpiryDebitMax GainMax LossR:RBE
$190.00$187.50Aug 7$0.27$2.23$0.278.26$189.73
$200.00$197.50Aug 14$0.27$2.23$0.278.26$199.73
$195.00$192.50Aug 14$0.31$2.19$0.317.06$194.69
$200.00$190.00Aug 7$1.28$8.72$1.286.81$198.72
$205.00$200.00Jul 31$1.16$3.84$1.163.31$203.84

Bear call spreads & bull put spreads collecting premium. Receive credit upfront, profit if stock stays in range. 33 found (best R:R 9.00, avg 1.04)

BEAR CALL (5)
SellBuyExpiryCreditMax GainMax LossR:RBE
$200.00$202.50Jul 31$1.98$1.98$0.523.81$201.98
$200.00$202.50Aug 7$1.85$1.85$0.652.85$201.85
$205.00$207.50Aug 7$1.72$1.72$0.782.21$206.72
$195.00$200.00Aug 7$3.40$3.40$1.602.12$198.40
$197.50$202.50Aug 21$3.10$3.10$1.901.63$200.60
BULL PUT (5)
SellBuyExpiryCreditMax GainMax LossR:RBE
$207.50$205.00Jul 31$2.25$2.25$0.259.00$205.25
$205.00$202.50Aug 14$1.50$1.50$1.001.50$203.50
$210.00$205.00Aug 14$2.85$2.85$2.151.33$207.15
$197.50$195.00Aug 14$1.40$1.40$1.101.27$196.10
$197.50$195.00Jul 31$1.22$1.22$1.280.95$196.28

Same strike, different expirations. Sell near-term, buy far-term. Profits from time decay differential. 12 found (avg debit $1.93, cheapest $0.48)

CALLS (5)
StrikeNear ExpFar ExpNet DebitNear IVFar IV
$207.50Jul 31Aug 7$0.48471.1%26.8%
$217.50Aug 14Aug 21$0.7039.7%37.6%
$215.00Aug 7Aug 14$0.8242.1%37.1%
$195.00Jul 31Aug 7$1.10248.6%28.9%
$205.00Jul 31Aug 7$2.25-999.0%33.6%
PUTS (5)
StrikeNear ExpFar ExpNet DebitNear IVFar IV
$200.00Jul 31Aug 7$1.16264.6%30.4%
$195.00Jul 31Aug 14$1.95248.6%34.0%
$197.50Jul 31Aug 14$2.13536.9%38.7%
$202.50Aug 7Aug 14$2.2029.6%34.5%
$205.00Jul 31Aug 14$4.57-999.0%37.2%

Buy call + put at the same strike and expiry. Profits from large moves in either direction. 8 found (cheapest 1.39% of stock, avg 3.65%)

StrikeExpiryCall$Put$TotalBE LowBE HighCost%
$205.00Jul 31$1.10$1.73$2.83$202.17$207.831.39%
$200.00Jul 31$3.38$0.57$3.95$196.05$203.951.95%
$207.50Jul 31$1.15$3.98$5.13$202.37$212.632.53%
$202.50Aug 7$4.35$2.60$6.95$195.55$209.453.42%
$200.00Aug 7$6.20$1.73$7.93$192.07$207.933.91%
$195.00Jul 31$8.50$0.03$8.53$186.47$203.534.20%
$202.50Aug 14$6.50$4.80$11.30$191.20$213.805.57%
$210.00Aug 14$3.50$9.15$12.65$197.35$222.656.23%

Buy OTM call + OTM put at different strikes. Cheaper than straddles, needs bigger move to profit. 61 found (cheapest 0.68% of stock, avg 1.95%)

Call KPut KExpiryCall$Put$TotalBE LowBE High
$210.00$190.00Aug 7$0.93$0.45$1.38$188.62$211.38
$210.00$185.00Aug 7$0.93$0.53$1.46$183.54$211.46
$212.50$190.00Aug 7$1.08$0.45$1.53$188.47$214.03
$212.50$185.00Aug 7$1.08$0.53$1.61$183.39$214.11
$220.00$200.00Jul 31$1.08$0.57$1.65$198.35$221.65
$215.00$190.00Aug 7$1.23$0.45$1.68$188.32$216.68
$212.50$200.00Jul 31$1.13$0.57$1.70$198.30$214.20
$207.50$200.00Jul 31$1.15$0.57$1.72$198.28$209.22
$215.00$185.00Aug 7$1.23$0.53$1.76$183.24$216.76
$210.00$200.00Jul 31$1.25$0.57$1.82$198.18$211.82

Sell OTM put spread + OTM call spread. Collect premium, profit if stock stays between breakevens. 48 found (best R:R 18.23, avg credit $1.78)

Put SpreadCall SpreadExpiryCreditMax LossR:RBE LowBE High
205/208210/212Jul 31$2.37$0.1318.23$205.13$212.37
202/205208/210Aug 14$2.35$0.1515.67$202.65$209.85
195/198208/210Aug 14$2.25$0.259.00$195.25$209.75
200/202210/212Aug 14$2.25$0.259.00$200.25$212.25
202/205218/220Aug 14$2.15$0.356.14$202.85$219.65
188/190200/202Aug 7$2.12$0.385.58$187.88$202.12
195/198218/220Aug 14$2.05$0.454.56$195.45$219.55
200/202208/210Aug 14$2.00$0.504.00$200.50$209.50
188/190205/208Aug 7$1.99$0.513.90$188.01$206.99
202/205212/215Aug 14$1.85$0.652.85$203.15$214.35

Buy lower + upper strikes, sell 2x middle strike. Low cost, max profit at the middle strike at expiry. 14 found (best R:R 49.00, cheapest $0.05)

CALLS (5)
LowMidHighExpiryDebitMax GainR:R
$205.00$207.50$210.00Jul 31$0.05$2.4549.00
$212.50$215.00$217.50Aug 14$0.15$2.3515.67
$202.50$205.00$207.50Jul 31$0.35$2.156.14
$215.00$220.00$225.00Aug 7$0.75$4.255.67
$210.00$212.50$215.00Aug 14$0.75$1.752.33
PUTS (4)
LowMidHighExpiryDebitMax GainR:R
$200.00$202.50$205.00Aug 14$0.35$2.156.14
$185.00$187.50$190.00Aug 7$0.62$1.883.03
$197.50$200.00$202.50Aug 14$0.88$1.621.84
$192.50$195.00$197.50Aug 14$1.09$1.411.29

Buy 1 option, sell 2 at a different strike (1:2 ratio). Can be entered for a credit. Unlimited risk on naked leg. 40 found (best net $-0.11, 30 credits)

CALLS (5)
Buy KSell KRatioExpiryNetMax Gain
$230.00$240.001:2Aug 21-$0.11$9.89
$220.00$230.001:2Aug 21-$1.00$9.00
$212.50$220.001:2Jul 31-$1.03$6.47
$220.00$225.001:2Aug 7-$0.03$4.97
$202.50$207.501:2Aug 14-$2.20$2.80
PUTS (5)
Buy KSell KRatioExpiryNetMax Gain
$195.00$185.001:2Jul 31-$2.13$7.87
$185.00$180.001:2Jul 31-$1.08$3.92
$197.50$195.001:2Aug 14-$0.58$1.92
$202.50$200.001:2Aug 7-$0.86$1.64
$187.50$185.001:2Aug 7-$0.88$1.62

Sell OTM calls against 100 shares you own. Collect premium for income, capped upside at strike. Yield% = premium/stock price. 12 found (best yield 1.53%, avg 0.69%)

StrikeExpiryBidDeltaOTM%Yield%If Called%VolOI
$207.50Aug 14$3.100.422.2%1.53%3.77%41
$205.00Aug 7$2.400.471.0%1.18%2.19%2315
$210.00Aug 14$2.300.363.5%1.13%4.61%53
$215.00Aug 21$1.900.305.9%0.94%6.87%922
$212.50Aug 14$1.600.294.7%0.79%5.49%2--
$215.00Aug 14$1.150.245.9%0.57%6.50%253
$220.00Aug 21$1.100.238.4%0.54%8.94%2479
$220.00Aug 14$0.900.168.4%0.44%8.84%22817
$217.50Aug 14$0.800.217.2%0.39%7.56%211
$217.50Aug 21$0.600.257.2%0.30%7.46%4--

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 893
Total Puts 319
Put/Call Ratio 0.36
Net Difference 574

Prior's Put/Call Breakdown

Total Calls 777
Total Puts 488
Put/Call Ratio 0.63
Net Difference 289

Prior 7-Day Put/Call Summary

Total Calls 4,579
Total Puts 4,838
Average Put/Call Ratio 1.42
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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