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MEXC Exchange/Learn/Sarah Chen
Sarah Chen

Sarah Chen

Nationality: Australia Bio: Sarah Chen specializes in DeFi protocols, smart contracts, and Layer-2 solutions. Based in Melbourne, she brings technical expertise and clear communication to complex blockchain topics. She holds a Bachelor's degree in Computer Science from the University of Melbourne and worked as a blockchain developer for three years before transitioning to technical writing. Her hands-on experience with Ethereum, Solana, and other platforms allows her to explain intricate concepts in accessible language. Since joining MEXC Learn in 2022, Sarah has focused on making blockchain technology understandable for all users, covering topics from DeFi yield farming to zero-knowledge proofs. Areas of Expertise: - DeFi Protocols - Smart Contract Analysis - Layer-2 Solutions - Blockchain Infrastructure - Protocol Security

Recent Articles

What Is Invesco QQQ ETF? Nasdaq-100 Holdings, Strategy, Fees and Risks

What Is Invesco QQQ ETF? Nasdaq-100 Holdings, Strategy, Fees and Risks

Summary Invesco QQQ ETF (NASDAQ: QQQ) is an exchange-traded fund designed to track the Nasdaq-100 Index, which represents 100 of the largest non-financial companies listed on the Nasdaq Stock Market.

2026-08-13

What Is QQQON? Ondo Tokenized Invesco QQQ ETF Explained

What Is QQQON? Ondo Tokenized Invesco QQQ ETF Explained

Summary QQQON, styled by Ondo as QQQon, is a tokenized product designed to provide economic exposure linked to the Invesco QQQ ETF (NASDAQ: QQQ). The product structure has three important layers:

2026-08-13

Why Does QQQON Track QQQ? Tokenized ETF Premiums, Discounts and Price Differences Explained

Why Does QQQON Track QQQ? Tokenized ETF Premiums, Discounts and Price Differences Explained

Summary QQQON is designed to provide economic exposure linked to Invesco QQQ, while QQQ itself tracks the Nasdaq-100 Index. This creates a two-stage tracking structure: Nasdaq-100 Index ↓ QQQ ETF ↓

2026-08-13

QQQ Holdings 2026: Top Companies, AI Exposure and Nasdaq-100 Sector Breakdown

QQQ Holdings 2026: Top Companies, AI Exposure and Nasdaq-100 Sector Breakdown

Summary Invesco QQQ is often associated with U.S. Big Tech, but understanding QQQ holdings requires looking beyond the idea that it is simply a “technology ETF.” QQQ tracks the Nasdaq-100 Index,

2026-08-13

QQQ vs QQQM: What’s the Difference Between Invesco’s Nasdaq-100 ETFs?

QQQ vs QQQM: What’s the Difference Between Invesco’s Nasdaq-100 ETFs?

Summary QQQ and QQQM both provide exposure to the Nasdaq-100 Index. That often leads to a simple question: If both track the same index, why do both funds exist? The main differences are: Expense

2026-08-13

QQQ Price Prediction 2026–2030: AI, Interest Rates, Earnings and QQQON Outlook

QQQ Price Prediction 2026–2030: AI, Interest Rates, Earnings and QQQON Outlook

Summary Forecasting Invesco QQQ through 2030 requires forecasting the earnings and valuations of approximately 100 of the largest Nasdaq-listed non-financial companies. The most important variables

2026-08-13

MEXC vs Gate KIMI Pre-IPO Futures: Fees, Leverage and Position Limits Compared

MEXC vs Gate KIMI Pre-IPO Futures: Fees, Leverage and Position Limits Compared

Summary Both MEXC and Gate provide Pre-IPO perpetual futures linked to market expectations surrounding Moonshot AI and Kimi. However, the compared KIMI contract settings show important differences

2026-08-13

What Happens to MOONSHOTUSDT After the Kimi IPO? Pre-IPO Futures Conversion Explained

What Happens to MOONSHOTUSDT After the Kimi IPO? Pre-IPO Futures Conversion Explained

Summary If Moonshot AI eventually completes an IPO, traders may ask what happens to existing MOONSHOTUSDT Pre-IPO Futures positions. MEXC’s general Pre-Market Futures framework allows a Pre-Market

2026-08-13

Is QQQ a Good Investment in 2026? AI Growth, Concentration, Valuation and Risks

Is QQQ a Good Investment in 2026? AI Growth, Concentration, Valuation and Risks

Summary Whether Invesco QQQ is a good investment in 2026 depends largely on how an investor views four competing forces: Bullish factors AI infrastructure growth; Semiconductor demand; Cloud

2026-08-13

QQQ vs SPY: Nasdaq-100 vs S&P 500 — What’s the Difference?

QQQ vs SPY: Nasdaq-100 vs S&P 500 — What’s the Difference?

Summary QQQ and SPY are two of the most widely followed U.S. ETFs, but they track different indexes. Invesco QQQ → tracks the Nasdaq-100 State Street SPDR S&P 500 ETF Trust (SPY) → tracks the S&P 500

2026-08-13

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