Without the facade

The facade is the recommended default, not the only way in. It’s a thin layer over RoundlyConsulting\TradingAnalytics\TradingAnalyticsManager, the facade root — a container singleton. Inject it through the constructor for the same API with an explicit dependency and no static calls:

use RoundlyConsulting\TradingAnalytics\TradingAnalyticsManager;

final class PerformanceReport
{
    public function __construct(private TradingAnalyticsManager $analytics) {}

    public function build(iterable $rows): array
    {
        return $this->analytics->for($rows)->scale(2)->calculate()->toArray();
    }
}

The engine class

RoundlyConsulting\TradingAnalytics\Analytics works on its own, too. Its static for() and make() take a LazyCollection of Trade objects — map rows with Trade::collect() first:

use RoundlyConsulting\TradingAnalytics\Analytics;
use RoundlyConsulting\TradingAnalytics\DataTransferObjects\Trade;

// The engine itself — takes a LazyCollection of Trade objects
Analytics::for(Trade::collect($rows))->calculate();
Analytics::make($trades)->only([Counts::class])->calculate();   // make() is the same constructor

No action classes

The package has no action classes: it is a stateless calculation engine, and the manager only normalises the input and builds the engine. A setting made with using() on the singleton applies to injected managers and the facade alike.