penfold¶ ↑

github.com/aasmith/penfold

Penfold is an assistant for screening potentital and tracking current covered call positions.

• Reports on the current profitability of a current position.

• Shows the potential profitability of hypothetical positions.

* Add portfolio read/write frontend.
* Allow penfold-try to use a default ITM strike price.
* Some arguments to penfold-try are incomplete.
* Make commission class more flexible.

Usage: penfold [position|try|show|list|add|remove] [options]

Reports on a current position.

Usage: penfold position [[-n NAME|-A] exit options]

Position options:
    -n, --name NAME                  Name of position in portfolio
    -A, --all                        Use all positions in portfolio

Exit options:
    -s, --exit-stock-price PRICE     Stock price to exit at
    -o, --exit-option-price PRICE    Option price to exit at
    -e, --exit-days DAYS             Exit in n DAYS (default 0)
    -E, --expires                    Hold position until expiry

Common options:
    -c, --commission=NAME            Commission fees to apply
    -h, --help                       Show this message
    -v, --verbose

Tries out a hypothetical position.

Usage: penfold try [[[ticker options] entry options] exit options]

Ticker options:
    -t, --ticker=SYMBOL              Stock ticker SYMBOL to try
    -n, --num-shares=NUM             Number of shares in position
    -d, --option-date=DATE           Expiry DATE of option contract
    -x, --option-strike=PRICE        Option strike PRICE

Entry options:
    -s, --entry-stock-price=PRICE    Stock PRICE to enter at
    -o, --entry-option-price=PRICE   Option PRICE to enter at

Exit options:
    -S, --exit-stock-price=PRICE     Stock PRICE to exit at
    -O, --exit-option-price=PRICE    Option PRICE to exit at
    -e, --exit-days=DAYS             Exit in n DAYS (default expiry)
    -E, --expires                    Hold position until expiry

Common options:
    -c, --commission=NAME            Commission fees to apply
    -L, --last                       Use last price instead of bid/ask for stock pricing
    -h, --help                       Show this message
    -v, --verbose

# Commands for checking a current position

# check the profit of a position, using current market pricing
# assuming an immediate exit

penfold position --name=example

# check the profit of a position, using a hypothetical exit price,
# assuming an exit 3 days from now

penfold position 
        --name=example
        --exit-stock-price=4.56
        --exit-option-price=0.52
        --exit-days=3

# check the profit of a position, using current market pricing
# assuming the expiry of the contract

penfold position --name=example --expires

# Commands for checking a potentital position

# check the profit of stock XYZ, with an August 2010 option with $4 strike,
# using current market pricing and assuming an expiry of the contract

penfold try --stock=XYZ --num-shares=1000 --option-date=100821 --option-strike=4

# check the profit of stock XYZ with an August 2010 option with $4 strike,
# using provided entry pricing and assuming an exit in 5 days with provided
# exit pricing

penfold try 
        --stock=XYZ --num-shares=1000 --option-date=100821 --option-strike=4
        --stock-entry-price=4.25 --option-entry-price=0.35
        --exit-days=5 --stock-exit-price=4.51 --option-exit-price=0.39

# Batch position checks

# Show all positions assuming expiry with current market prices
penfold position --all --expires

# Show all positions assuming immediate exit with current market prices
penfold position --all 

# Portfolio commands

# List current portfolio positions

penfold [show|list]

penfold add example 
            --stock=XYZ --num-shares=1000 --option-date=100821 --option-strike=4
            --stock-entry-price=4.5 --option-entry-price=0.34

penfold remove example

penfold rename example new_example

* nokogiri, if fetching quotes

Copyright © 2010 Andrew A. Smith

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the ‘Software’), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED ‘AS IS’, WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.