IJin Insight

Two ETFs track the same underlying index. Over six months, the underlying climbs back to where it started — flat, on net. One ETF is up zero percent. The other is down thirty. Both are doing exactly what they were built to do. This is volatility decay, and it is the quietest predator in the retail ETF lineup. The 2x leveraged ETF, the 3x leveraged ETF, the inverse ETF — they all share one structural feature: **they reset their leverage every trading day.** That daily reset is the entire problem. It is not a flaw. It is the design. Here is the simple math. Suppose an underlying index sits at 100. Monday it falls 10% to 90. Tuesday it rises 11.1% back to 100. The underlying is flat over the two days. Now apply 2x daily leverage. Monday, the 2x ETF falls 20% from 100 to 80. Tuesday, it rises 22.2% from 80 to 97.78. The underlying is back at 100. The 2x ETF is at 97.78. Over a flat two-day stretch, the leveraged product lost 2.2%. Apply 3x leverage to the same sequence. Monday, −30% (100 →...

Imagine you receive $50,000 — a bonus, an inheritance, the closing of a long deal. The market is sitting near all-time highs. Half of the financial advice on the internet says *invest it all today.* The other half says *spread it over twelve months, just in case.* A reader could browse a thousand articles on this question and not get past that split. It is one of the oldest debates in retail investing. Here is what the data actually says. Vanguard's widely cited 2012 research compared lump-sum investing against twelve-month dollar-cost averaging across U.S. and U.K. markets going back to 1926. Across thousands of historical periods, **lump sum outperformed DCA in roughly 67% of the cases.** That figure has been replicated in subsequent reviews — Morningstar updates, RIA Intel write-ups, internal asset-manager studies — with similar findings. The mechanism is not subtle. Markets trend upward over long stretches. Money parked outside the market earns the cash rate while waiting; mone...

Everyone has an opinion about what the Fed should do with interest rates. Cut them. Raise them. Hold them. Fire the Chair. Almost nobody understands how the decision actually gets made — who votes, what data they look at, how the meeting works, and why the dot plot matters more than the press conference. This is the complete guide. No jargon. No opinion. Just the machine, explained. Who Decides: The 12 Voters Interest rate decisions are made by the Federal Open Market Committee — the FOMC. It has 12 voting members at any given time. Seven of those votes belong to the Board of Governors. These are appointed by the President of the United States and confirmed by the Senate. They serve 14-year terms — long enough that no single president can stack the entire board. The Chair of the Fed (currently Jerome Powell, soon Kevin Warsh if confirmed) is one of these seven governors and leads the meetings. The remaining five votes come from regional Federal Reserve Bank presidents. The president of...

Content Warning: This post is educational only. It is not financial advice. This past week, Ripple's XRP traded at about $1.44, up modestly with the rest of the crypto market on news of a ceasefire extension. Bitcoin clawed its way back above $79,000 — its first time at that level since February. The mood in crypto headlines lifted from "slow grinding decline" to "maybe the bottom is in." In the same week, a different set of articles circulated in Korean and English crypto media. They asked whether XRP could reach $40 if BlackRock's expanding tokenized funds eventually used XRP infrastructure to settle U.S. Treasury purchases. $40 is roughly twenty-seven times the current price. Both numbers are real in the sense that someone, somewhere, wrote them down. Only one of them is a transaction. This is the gap most retail investors never quite see clearly — the distance between what trades today and what is being talked about as possible . The gap is the entire ...

This post is educational only. It is not financial advice. On the same day this week, two headlines ran past each other on the Korean financial wires. The first, from BCA Research, said inflation will keep being a problem — but a limited one. CPI swaps in the United States and Eurozone are pricing 3.2% inflation over the next twelve months. US tariffs alone are pushing core goods PCE about three percentage points higher than it would otherwise be. And yet, BCA's view is that the immediate threat of a wage-price spiral is low. Structural labor market conditions are different now. Public inflation concerns themselves are constraining what central banks can do. The risk of a serious, sustained overshoot is "quite low," they wrote. The second headline pointed in a different direction. The S&P 500 keeps printing all-time highs, but if you remove three companies — Nvidia, Microsoft, and Broadcom — the index is negative for the year. Since late February, 118 stocks in the S...

Warren Buffett retired. After six decades and a 5,502,284% return, he handed the keys to Greg Abel on December 31, 2025, and walked away from Berkshire Hathaway with $373 billion in cash and the greatest investing record in history. The era is over. Tim Cook is stepping down. After 15 years and a 1,933% stock gain, Apple’s CEO will become executive chairman on September 1, replaced by John Ternus — a hardware engineer. The company that defined the smartphone era is now scrambling to find its place in the AI era, watching NVIDIA and Alphabet race past it in market cap. Tesla beat earnings this week. Then Elon Musk said he’s spending $25 billion this year on robotaxis and humanoid robots that don’t exist yet. The stock went up 4%, then came back down. The company that was going to eat the world is still mostly a car company — and car sales are barely growing. Amazon dominated e-commerce and then cloud. Meta owned social media. NVIDIA became the most valuable company on earth. Every one o...