iShares MBS ETF vs PubMatic Inc — how do they compare? iShares MBS ETF trades at $89.74 (market cap $35.41B), while PubMatic Inc trades at $18.67 (market cap $850.88M). The key difference: iShares MBS ETF is far larger — about 41.6× PubMatic Inc's market cap, and PubMatic Inc is trading nearer its 52-week high, iShares MBS ETF nearer its low. Which is the better fit depends on your goals — on Pluang, investors hold iShares MBS ETF for 96 Days and PubMatic Inc for 40 Days on average.
| MBB | PUBM | |
|---|---|---|
Market Cap | $35.41B | $850.88M |
Volume | 5,388,525 | 997,698 |
Sector | Fixed Income | Technology |
52-Week High | $96.91 | $19.18 |
52-Week Low | $89.09 | $6.28 |
Typical Hold Time | 96 Days | 40 Days |
Enterprise Value | — | $754.01M |
Signals from Pluang's Aura AI — not financial advice
MBB, the iShares MBS ETF, trades at $89.68, up 0.52% on the day, but technical indicators signal a bearish trend with moving averages and ADX pointing lower. The stock recently hit a new 52-week low of $91.02 on September 15, 2026, as short interest surged 98.3% in September, reflecting negative sentiment. Recent news highlights concerns over rising intermediate-term rates and inflation pressures impacting mortgage-backed securities.
The outlook remains cautious due to interest rate sensitivity and convexity risks in the mortgage market. While institutional buying by firms like Corient Private Wealth provides some support, the bearish technicals and macroeconomic headwinds suggest limited near-term upside. Key risks include further rate hikes and prepayment volatility in the MBS portfolio.
PubMatic (PUBM) trades at $18.72, up 0.81% with bullish technical signals from moving averages. The company shows mixed fundamentals with strong revenue growth but negative profitability metrics, including a -4.66% net margin. Recent Q2 2026 earnings beat expectations with -$0.03 EPS versus -$0.18 expected, while analyst consensus remains strongly positive with 11 buy ratings and a $19.89 price target. Operating cash flow improved to $81M in 2025, supporting business stability.
The outlook suggests potential upside near analyst targets, though profitability challenges and CFO transition pose risks. Revenue growth in mobile app and CTV segments provides catalysts, while high P/E of 132 indicates premium valuation. Investment opportunity exists for growth-focused investors tolerant of current losses, with sentiment supported by AI-driven ad tech adoption.
Trailing returns across standard periods
The fund will invest at least 80% of its assets in the component securities of the underlying index and TBAs that have economic characteristics that are substantially identical to the economic characteristics of the component securities of the index, and the fund will invest at least 90% of its assets in fixed income securities included in the underlying index that advisor believes will help the fund track the index.
Read more on MBB →PubMatic Inc is engaged in the digital advertising business. The company provides a specialized cloud infrastructure platform that enables real-time programmatic advertising transactions. The platform helps independent app developers and publishers to control and maximize their digital advertising businesses.
Read more on PUBM →