Currently Dylan the Stock Broker has a hard time making any actual profit unless you are leaving your game running for days at a time, due to all the stock history resetting and immediately making purchases when opening the game if you have "Dylan's Evaluations" enabled.

Some potential suggestions for improvements:

1. Add a Buy setting even lower than Frugal called "Low Risk" that uses 3$ OR Frugal, whichever is the lower value. This effectively eliminates high risk purchases.

(Perhaps even set this as the default option, because otherwise you are virtually guaranteed to lose a bunch of cookies for no reason upon enabling Dylan and you will have to commit to leaving your game running for the next 24 hours to make a profit.)

2. Store median and average values across save reloads so that Dylan can continue using these values to better determine Buy and Sell prices.

3. Currently you can only set the Minimum percentage of stock purchasable to enable a stock purchase from Dylan. Being able to set another value for the Maximum percentage of stock purchase at a time from Dylan would be helpful in some cases.

4. If you want to copy the effective algorithm by the guy who made the CookiStocker mod, his explanation is here: https://psteamcommunity.yuanyoumao.com/workshop/filedetails/discussion/2992885336/3802778195620505953/

5. If you are feeling extra creative and don't want to copy a pre-existing algorithm but want something more scuffed and interesting, you could add a toggle to enable a sort of gambler's algorithm (this algorithm is of my own creation; if you use this please give credit on this mod's Workshop page and link the discussion post) as an augmentation to the basic Buy/Sell algorithm:

Each tick:

*An Initial Quantity (this value is set by a setting and overrides the Maximum percentage setting mentioned above) of any unowned stock within the Buy range is purchased.

*A currently owned stock that has increased in price into the Sell range is completely sold.

*A currently owned stock moving from any mode to Slow Fall (mode 2) is purchased; the quantity purchased is a fifth of the currently owned quantity.

*A currently owned stock moving from any mode to Fast Fall (mode 4) is purchased; the quantity purchased is the currently owned quantity (i.e. "doubling up").

*A currently owned stock moving from Slow Fall (mode 2) to Slow Rise (mode 1) or Fast Rise (mode 3) is sold; the quantity sold is a fifth of the currently owned quantity, unless the currently owned quantity is the Initial Quantity or Max in which case no quantity is sold.

(i.e. Reaching Max on a stock falls back onto the basic Buy/Sell algorithm)

*A currently owned stock moving from Fast Fall (mode 4) to Slow Rise (mode 1) or Fast Rise (mode 3) is sold; the quantity sold is half the currently owned quantity, unless the currently owned quantity is the Initial Quantity or Max in which case no quantity is sold.

Additional rules:

*If a currently owned stock has moved from Slow Fall (mode 2) to Chaotic (mode 5) AND the current price is higher than the last purchased price, the stock is sold; the quantity sold is a fifth of the currently owned quantity, unless the currently owned quantity is the Initial Quantity or Max in which case no quantity is sold.

*If a currently owned stock has moved from Fast Fall (mode 4) to Chaotic (mode 5) AND the current price is higher than the last purchased price, the stock is sold; the quantity sold is half the currently owned quantity, unless the currently owned quantity is the Initial Quantity or Max in which case no quantity is sold.

*If a currently owned stock has moved from Stable (mode 0) to Slow Rise (mode 1) or Fast Rise (mode 3) or Chaotic (mode 5) AND the current price is higher than the last purchased price, the stock is sold; the quantity sold is a fifth of the currently owned quantity, unless the currently owned quantity is the Initial Quantity or Max in which case no quantity is sold.

(Final notes: The last rule here treats the last purchase as if it was a Slow Fall purchase, since I can only assume that trying to track a stock moving from one mode to the next 3 times would be overly complicated. There are no rules defining valid Chaotic mode purchases for similar reasons of over-complication in the ruleset.)