Suppose that for a given setup, price hits target before it reaches invalidation 70% of the time. Great, right? But getting filled is not guaranteed.
The more right you are about your trade setup, the less likely you are to get filled
By extension, getting filled actually lowers the Bayesian probability that you are right
Should I sacrifice some RRR to get filled more often?
The eternal dilemma of contrarian trading
Suppose that for a given setup, price hits target before it reaches invalidation 70% of the time. Great, right? But getting filled is not guaranteed.
Scenario 2: If only 40 out of 100 limits get filled, expected hit rate is 25%
Both scenarios have 30 losses in expectation, but the hit rate in the first is >2x better simply because more trades were taken
EV = hitrate * avg_win_R + (1-hitrate) * avg_loss_R
So we want argmax(EV), and we can compute this by seeing how hitrate and avg_win_R affect the EV of the setup.
Here's a real example where I completed this optimization.
- the average win R tends to increase ("W:PR")
- the number of losses ("L") stays constant at 31
- but the number of trades taken decreases ("#")
- so the hit rate decreases, from a max of 67.7% to a min of 11.4%.
- Understand the tradeoff between RRR and hit rate. I talked about limit orders in this thread but a similar relationship applies to market entries too
- There are no easy answers here. Only the prospect of hard work collecting good data and learning from it.
💪
@Captain_Kole1 @melodyofrhythm @ape_rture @realadamli @7ommyZero @voicelessFvoice
More from Trading
Thread on Short straddle with adjustments:
Short straddle is non-directional strategy
Selling same strike price CALL/PUT option same underlying with same expiry.
Nifty Spot at 14353, So you can sell 14350 CE as well 14350 PE of 14 Jan. Expiry.
(1/n)
*RETWEET for max response
Bullish short straddle: Selling 14400 CE and 14400 PE of same expiry.
Bearish short straddle: Selling 14250 CE and 14250 PE of same expiry.
You can sell straddle as per your market view.
If you are natural view sell CE and PE at ATM strike.
(2/n)
Short straddle has limited profit potential (only premium) and unlimited risk without adjustment.
In Example, Short straddle of 14350, Breakeven is (14131.0-14569.0), need 1.7Lac Margin to sell straddle.
Maximum profit: 16k and Loss: Unlimited, Winning probability: 50%
(3/n)
If market staying near at 14350 then win. Probability increase slowly. Rewards also increase slowly.
Volatility(IV) is also play important role in selling straddle, Like If IV increase so straddle premium increase and IV cool off so premium casually comes down.
(4/n)
Short straddle adjustment:
https://t.co/59Lr64kEtK way to limit the overnight risk.
Convert short straddle in Ironfly, its nothing we have to add long strangle in short straddle it become Ironfly. It gives the good Risk Rewards.
(5/n)
Short straddle is non-directional strategy
Selling same strike price CALL/PUT option same underlying with same expiry.
Nifty Spot at 14353, So you can sell 14350 CE as well 14350 PE of 14 Jan. Expiry.
(1/n)
*RETWEET for max response
Bullish short straddle: Selling 14400 CE and 14400 PE of same expiry.
Bearish short straddle: Selling 14250 CE and 14250 PE of same expiry.
You can sell straddle as per your market view.
If you are natural view sell CE and PE at ATM strike.
(2/n)
Short straddle has limited profit potential (only premium) and unlimited risk without adjustment.
In Example, Short straddle of 14350, Breakeven is (14131.0-14569.0), need 1.7Lac Margin to sell straddle.
Maximum profit: 16k and Loss: Unlimited, Winning probability: 50%
(3/n)
If market staying near at 14350 then win. Probability increase slowly. Rewards also increase slowly.
Volatility(IV) is also play important role in selling straddle, Like If IV increase so straddle premium increase and IV cool off so premium casually comes down.
(4/n)
Short straddle adjustment:
https://t.co/59Lr64kEtK way to limit the overnight risk.
Convert short straddle in Ironfly, its nothing we have to add long strangle in short straddle it become Ironfly. It gives the good Risk Rewards.
(5/n)