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Dario Fenn

DeFi & Markets Lead

Dario Fenn

Covers deFi protocols, yield, market structure and on-chain data.

8 stories44 guidesRatings: Exchanges & trading, Yield & lending, DeFi & infrastructure

Dario Fenn leads OBOL's coverage of decentralised finance and market structure. His beat runs from the mechanics of automated market makers and lending protocols through to how a trade actually fills — order book depth, funding rates, and the difference between an advertised yield and the one a position returns after fees, gas and impermanent loss.

DeFi, yield and how markets actually clear

He is unsentimental about headline APYs, and spends most of his time on the question the marketing avoids: who is paying this, and what happens when they stop. That runs through his work on emissions versus revenue, leveraged looping, liquidation mechanics and the way a token's supply schedule quietly sets the ceiling on its price.

The same scepticism applies to data. Reported volume is self-declared and frequently manufactured; total value locked double-counts the same capital across protocols. He prefers figures that cost money to fake — depth, fees actually paid, net flows — and says so when a number does not survive that test.

At OBOL, Dario writes the DeFi and market guides, contributes the protocol and lending ratings, and covers protocol launches and market events as they happen. Where an assessment of risk is a judgement rather than a settled fact, he labels it as one.

Latest stories

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  1. Bitcoin Slips Below $83,000 as Yields Surge, While Robinhood Adds $25M in BTCBitcoin fell below $83,000 on Wednesday as Treasury yields climbed and leveraged longs were flushed out, even as Robinhood disclosed a $25 million bitcoin position on its balance sheet.7 Oct 2026Markets
  2. SEC Eases Token Buyback Concerns as Surging Treasury Yields Weigh on BitcoinThe SEC says token buybacks without a central party are unlikely to be investment contracts, while a 5%-plus Treasury yield pushes Bitcoin toward $83,000.29 Sept 2026Markets
  3. Bitget Confirms $351.6 Million Breach as Bitcoin Steadies Near $84,000 on Fed Rate BetsBitget confirms a $351.6 million hack linked to North Korea, while Bitcoin holds near $84,000 after hot US PMI data lifts Fed rate-hike bets.25 Sept 2026Markets
  4. Bitcoin Slides as Senate Blocks Clarity Act Ahead of Fed's Pivotal Rate DecisionThe Senate's failure to advance the Clarity Act sent bitcoin and XRP lower, and traders are now bracing for a Fed rate decision that could add fresh volatility to crypto markets.16 Sept 2026Markets
  5. Bitcoin and Ethereum Slide as Iran Tensions Collide With a Pivotal Senate Crypto VoteBitcoin and Ethereum opened lower on September 2 as renewed US-Iran fighting pushed oil prices up and rate-cut hopes down — just as Washington gears up for a make-or-break Senate vote on the CLARITY Act crypto bill.2 Sept 2026Markets
  6. Bitcoin Reclaims $80,000 as ETF Inflows Surge Ahead of Fed's Jackson Hole VerdictBitcoin is trading near $79,100 on August 28 after briefly topping $80,000, propelled by a multi-day streak of U.S. spot ETF inflows. All eyes now turn to Fed Chair Kevin Warsh's Jackson Hole remarks, seen as the next major catalyst for crypto markets.28 Aug 2026Markets
  7. Aave v4 Launches With Unified Liquidity Layer Across ChainsAave v4 replaces the protocol's patchwork of isolated markets with a single cross-chain liquidity hub, betting that consolidation beats the multi-chain land grab that has splintered DeFi lending for two years.17 Aug 2026DeFi
  8. AI Agents Start Paying Each Other On-Chain Using the x402 ProtocolAutonomous software agents are now settling machine-to-machine payments in stablecoins through the x402 protocol, moving the idea from demo day into live commercial traffic.16 Aug 2026AI x Crypto
  1. Points Programmes: Pricing an Airdrop That May Not ComeYou are lending capital to a protocol in exchange for an unspecified quantity of an unlaunched token on an undisclosed date.Intermediate9 min
  2. Native vs Wrapped Bridging: Reading What ArrivesTwo routes, same asset name, same destination chain. One delivers the issuer's own token; the other delivers a claim on a bridge's reserves.Beginner7 min
  3. Isolated vs Shared Lending Pools: Where Bad Debt GoesDepositing into a shared lending pool means underwriting every asset that pool accepts as collateral, including the ones you would never touch.Intermediate9 min
  4. How to Verify a Token Contract Before You BuyMost token scams are visible on a block explorer before you buy. The problem is knowing which nine fields to read.Intermediate9 min
  5. Concentrated Liquidity: Why LPs Lose Money in RangesChoosing a price range is choosing leverage. The fees rise, the divergence loss rises with them, and most range positions underperform simply holding.Advanced11 min
  6. Vault Strategies: What an Aggregator Does With Your DepositYou deposit once. The vault then interacts with several protocols on your behalf, and you own every risk in that chain.Beginner8 min
  7. Wrapped Assets: Who Holds the Collateral Behind Your TokenWrapped BTC on Ethereum is not Bitcoin. It is an IOU whose value depends entirely on whoever holds the Bitcoin behind it.Intermediate9 min
  8. Aggregators vs Direct Swaps: When Routing Saves You MoneySplitting one trade across four pools sounds like overhead. On the trades where it matters, it is the difference between a good fill and a bad one.Beginner7 min