Since no one answered, this is basically a grep for stock, issuance or equity. With some sort of likely answer you can verify in backtest starting with something like this where a handful are selected, being logged, and add any math, verifying numbers, you may want to comment out dropna() to let any nans through and cope with them.
accrued_preferred_stock_dividends
capital_stock
common_equity_to_assets
common_stock
common_stock_dividend_paid
common_stock_equity
common_stock_issuance
common_stock_payments
earningsfrom_equity_interest_net_of_tax
earnings_from_equity_interest
earnings_losses_from_equity_investments
earning_loss_of_equity_investments
equity_per_share_growth
excess_tax_benefit_from_stock_based_compensation
investments_in_other_ventures_under_equity_method
long_term_debt_equity_ratio
long_term_debt_issuance
net_common_stock_issuance
net_income_common_stockholders
net_issuance_payments_of_debt
net_long_term_debt_issuance
net_preferred_stock_issuance
net_short_term_debt_issuance
otherunder_preferred_stock_dividend
other_equity_adjustments
preferred_securities_outside_stock_equity
preferred_stock
preferred_stock_dividends
preferred_stock_dividend_paid
preferred_stock_equity
preferred_stock_issuance
preferred_stock_of_subsidiary
proceeds_from_issuance_of_warrants
proceeds_from_stock_option_exercised
redeemable_preferred_stock
repurchase_of_capital_stock
short_term_debt_issuance
stockholders_equity
total_debt_equity_ratio
total_equity
total_equity_gross_minority_interest
treasury_stock