Get-SharesInAmount.ps1

function Get-SharesInAmount {
	[CmdletBinding()]
	param (
		$stock,
		$amount,
		$transactionCost = 5,
		$maxCostRatio = 0.02
	)
	
	begin {
	}
	
	process {
		$sharesToConsider = [Math]::floor(($amount * ($stock.Weight)/100) / ($stock.Price) )
		$purchasePrice = ($sharesToConsider * $stock.Price) + $transactionCost
		if ($transactionCost/$purchasePrice -gt $maxCostRatio) {
			$sharesToConsider = 0
			$purchasePrice = 0
		}
		[PSCustomObject]@{
			Symbol = $stock.Symbol
			Company = $stock.Company
			Shares = $sharesToConsider
			Cost = $purchasePrice
		}
	}
	
	end {
	}
}