LPDDR6 runs at 10.667 to 14.4 Gbps per pin, and its channel widens from 16 bits to 24. SK hynix starts mass production this half, with Xiaomi first in line — here is what the generation change is actually worth in GB/s.
Dividends from US stocks are withheld once at 15% with nothing added in Korea. Chinese dividends face an extra 4.4% at home. Here is the full arithmetic on 10 million won of dividends — and what changes above the 20 million won threshold.
Two ETFs tracking the same S&P 500 index are taxed differently in Korea. At 8.33 million won of annual realized gain, the 15.4% dividend route and the 22% capital gains route cost exactly the same. Here is where each one wins.
From January 2026, Korea's securities transaction tax is 0.20% on both KOSPI and KOSDAQ sales. Selling 10 million won of stock costs 20,000 won, withheld automatically. Here is how that 0.05 percentage point rise compounds with turnover.
A 2x leveraged ETF promises twice the daily move, not twice the return. Here is why the index can round-trip to par while the 2x product sits 4% underwater, calculated across volatility levels.
A buyback alone does not permanently shrink a company's share count. Using a case of 10 billion won in net income and 10 million shares, this piece calculates how buybacks and cancellations differ in shares outstanding, EPS, and voting rights.
A bond with a modified duration of 5 loses about 5% when market rates rise 1 percentage point. Here is how Macaulay and modified duration differ, with a calculated table of price moves.
In a muljeok (physical) division the parent keeps 100% of the new subsidiary and shareholders get nothing; in an injeok (spin-off) division shareholders receive new shares by the split ratio. Here is the share-allocation and ex-rights math, plus appraisal rights.
Korea discloses short positions from 0.01% of shares outstanding. Here is where to find the KRX data, why it lags two business days, and how it differs from the stock lending balance.
To receive a dividend, finish your purchase two business days before the record date. Here is how T+2 settlement, the ex-dividend date, and the payout math actually work in Korea.