Best Momentum Stocks to Buy for September 15th

Zacks highlighted Remitly Global, Magnolia Oil & Gas and Appian as momentum-stock ideas, citing upward current-year earnings-estimate revisions of 13.8%, 13.2% and 7.1%, respectively, over the past 60 days. Remitly shares gained 9.3% over three months versus a 1.7% S&P 500 increase, while Magnolia rose 1.9%; both Remitly and Appian hold a Zacks Rank #1, and Remitly and Magnolia have Momentum Scores of A. The article is analyst-driven stock-selection commentary rather than company-specific operational news.

Analysis

This is low-information sell-side screen output rather than a fundamental catalyst, so the highest-probability near-term effect is modest retail/quant flow into already-improving estimate-revision names—not a durable repricing. Avoid extrapolating the revision percentages without identifying whether they stem from revenue acceleration, lower opex, tax, or commodity assumptions; only the first two support sustained multiple expansion.

RELY has the cleanest potential 1-3 month setup if upward revisions reflect transaction-volume growth and improving take rate rather than FX translation. Its key second-order sensitivity is migrant-corridor economics: a weaker U.S. labor market or adverse immigration/remittance regulation would pressure send volumes, while lower rates could reduce interest-income support even if core transfers remain healthy. The relevant confirmation is next-quarter active-sender growth, revenue per sender, and adjusted EBITDA margin progression.

MGY is principally a commodity-beta vehicle, not an estimate-momentum story. The equity can outperform higher-cost shale peers if WTI remains supportive because its low-decline, low-capex model converts price into free cash flow efficiently; however, that also means consensus revisions can reverse rapidly on a $5-10/bbl WTI move. APPN is the most fragile: incremental AI/process-automation optimism can expand the multiple, but it must demonstrate durable subscription growth and operating leverage against larger automation platforms such as NOW, MSFT and CRM.

Contrarian view: publication-driven momentum is likely crowded and insufficient to justify chasing all three. The better risk-adjusted expression is selective ownership after fundamental confirmation, with APPN requiring the greatest evidence because a high-duration software valuation is more exposed to even small guide-downs.

Key Decisions for Investors

• Watch, do not chase, RELY into its next earnings print; initiate a 1-3 month long only if active-sender growth and EBITDA guidance are raised. Falsify on decelerating send volume or revenue-per-sender compression; use a roughly 8-10% downside stop versus a 15-20% upside to a sustained estimate-revision rerating.
• Use MGY as a tactical 1-3 month long versus a higher-cost Permian basket or XOP only while WTI holds above the level embedded in updated consensus. Exit if WTI falls $5/bbl below that assumption or management raises capital intensity; this is a commodity-risk trade, not a standalone momentum recommendation.
• Keep APPN on an earnings watchlist rather than initiating on technical strength. Upgrade to long only if subscription growth reaccelerates alongside expanding adjusted operating margin; a bookings or guidance miss should favor a short APPN versus long NOW or CRM over the following 1-3 months.
• Do not treat the ranking as an independent catalyst for any position. Monitor 30-60 day consensus-revision breadth, estimate dispersion, and short interest; broad upward revisions across analysts would validate a fundamental signal, while a single-source revision leaves adverse post-earnings gap risk.