Janus Henderson Mid Cap Growth Managed Account Q1 2026 Commentary
The portfolio lagged the Russell Midcap Growth Index in Q1 2026, with industrials stock selection hurting results. Managers cut AppLovin, pointed to Teledyne’s strong results, and stayed constructive on Corteva.
Intelligence analysis by GPT-5.4 Mini
Janus Henderson says its Mid Cap Growth Managed Account fell 6.47% gross in Q1 2026, slightly behind the Russell Midcap Growth Index. The team highlighted AppLovin, DoorDash, Teledyne Technologies, and Corteva while emphasizing businesses with pricing power and durable advantages.
Janus Henderson’s stock basket lost a bit more than its benchmark this quarter. The managers trimmed one stock they worried might grow more slowly, liked another company’s strong report, and want businesses that can handle higher costs like a sturdy umbrella in a rainstorm.
Analysis
Performance
Janus Henderson reported that its Mid Cap Growth Managed Account Portfolio returned -6.47% gross in the quarter, just behind the Russell Midcap Growth Index at -6.35%. The firm said relative underperformance was driven mainly by stock selection in industrials, with financials also mentioned in the commentary summary.
What helped and hurt
The firm reduced its position in AppLovin because it is still watching developments tied to the company’s push into e-commerce marketing. That move reflects concern that the expansion is progressing more slowly than expected and that competition may be intensifying.
At the same time, the commentary pointed to Teledyne Technologies as a positive example. The company posted better-than-expected fourth-quarter revenue and earnings, with margin expansion and guidance that the manager described as supportive. The team also said investors have become more constructive on Corteva’s plan to split into two separate companies, seeing that as a possible way to unlock shareholder value.
Portfolio stance
The managers said they continue to favor businesses with strong competitive advantages and pricing power. That preference matters in a market where costs can rise quickly: companies with better pricing power may pass along those costs without squeezing margins as much. The commentary also noted ongoing attention to AI-related disruption, with selective investment in companies that can benefit from, or withstand, those shifts.
Bottom line
This is a classic active-manager update: modest relative underperformance, a few stock-specific adjustments, and a clear tilt toward resilient companies with durable economics. The main message is not a broad market call, but a disciplined focus on business quality, margin resilience, and company-specific catalysts.
Key points
- The portfolio returned -6.47% gross, slightly worse than the Russell Midcap Growth Index at -6.35%.
- Stock selection in industrials was the main drag on relative performance.
- Janus Henderson reduced AppLovin as it monitors the company’s e-commerce marketing expansion.
- Teledyne Technologies was a positive example after better-than-expected revenue, earnings, and guidance.
- The managers still prefer companies with strong competitive advantages and pricing power.
If the managers’ focus on competitive advantages and pricing power continues to pay off, the portfolio could better absorb cost pressure and protect margins. Teledyne’s strong results and Corteva’s split could also support returns if those company-specific trends continue.
If AppLovin’s e-commerce push keeps facing slower growth or stronger competition, that position could continue to weigh on results. The portfolio could also keep lagging its benchmark if stock selection in industrials does not improve.


