Steward Partners Expands ZALT Holdings by Over 60% Steward Partners Investment Advisory LLC increased its stake in Innovator U.S. Equity 10 Buffer ETF – Quarterly (ZALT) by 66.1% during the fourth quarter. The firm now owns 7,254 shares valued at $216,000, reflecting growing interest in ZALT's buffered investment approach, which caps gains but protects against the first 10% of losses.1