Calculate Volatility of Asset (PHP - Laravel)

calcVoA.php

<?
        $years = config('years');

        $companies = Company::where('bankrupted', 'yes')->where('country', 'COUNTRY_NAME_HERE')->where('type', 'unlisted')->get();

        foreach ($years as $year) {
            foreach ($companies as $company) {
                if (AssetMatch::where('unlisted_company_name', $company->name)
                    ->where('year', $year)->exists()) {
                    $marketCapitalization = AssetMatch::where('unlisted_company_name', $company->name)
                        ->where('year', $year)
                        ->first()
                        ->listed_company_market_cap;

                    $totalLiability = $company->totalLiabilities->where('year', $year);
                    $marketValueOfAsset = $company->marketValueOfAssets->where('year', $year);
                    $volatilityOfLiability = $company->volatilityOfLiabilities->where('year', $year);

                    $standardDeviation = AssetMatch::where('unlisted_company_name', $company->name)
                        ->where('year', $year)
                        ->first()
                        ->listed_company_standard_dev;



                    if (! is_null($totalLiability) && $totalLiability->count() != 0) {
                        $totalLiability = $totalLiability->first();
                        if (! is_null($totalLiability) && $totalLiability->count() != 0) {
                            $totalLiability = $totalLiability->toArray();
                            $totalLiabilityVal = (float)$totalLiability['value'];
                        }

                        if (! is_null($marketValueOfAsset) && $marketValueOfAsset->count() != 0) {
                            $marketValueOfAsset = $marketValueOfAsset->first();
                            if (! is_null($marketValueOfAsset) && $marketValueOfAsset->count() != 0) {
                                $marketValueOfAsset = $marketValueOfAsset->toArray();
                                $marketValueOfAssetVal = (float)$marketValueOfAsset['value'];
                            }

                            if (! is_null($volatilityOfLiability) && $volatilityOfLiability->count() != 0) {
                                $volatilityOfLiability = $volatilityOfLiability->first();
                                if (! is_null($volatilityOfLiability) && $volatilityOfLiability->count() != 0) {
                                    $volatilityOfLiability = $volatilityOfLiability->toArray();
                                    $volatilityOfLiabilityVal = (float)$volatilityOfLiability['value'];


                                    $result = (float)(($marketCapitalization / $marketValueOfAssetVal) * $standardDeviation) + (($totalLiabilityVal / $marketValueOfAssetVal) * $volatilityOfLiabilityVal);
                                    DB::transaction(function () use ($company, $result, $year) {
                                        VolatilityOfAsset::create([
                                        'company_id' => $company->id,
                                        'year' => $year,
                                        'value' => $result,
                                    ]);
                                    });
                                }
                            }
                        }
                    }
                }
            }
        }