Banco Santander (SAN) fell about 4% to $12.315 on Monday after Brazil's presidential run-off produced a result investors had not priced. The drop takes the stock through its 200-day average and below its 40-week average, which breaks the uptrend that stood a week ago. The balance of evidence now leans negative with high conviction, even though the stock is deeply oversold ahead of earnings on October 28, 2026.
Why it matters
Luiz Inácio Lula da Silva won more than 51% of the vote on Sunday, the Financial Times reported, surprising investors who had positioned for a Flávio Bolsonaro victory. Futures linked to the Brazilian real fell 10%. Brazil is Santander's second-largest market and contributed 15% of 2025 earnings, so the result bears directly on the bank's profit. In early European trading Morningstar noted that the shares fell 5.3% to 10.90 euros. The U.S.-listed stock's 4.1% drop is the same move.
The five-day numbers show this is a stock-specific story. SAN is down 5.4% over five days while the S&P 500 (SPY) is down 0.6% and the financial sector ETF (XLF) is up 1.9%. That leaves the stock about 7.3 points behind its sector. Most of the five-day loss came today, so the market was repricing on the news rather than shrugging it off. The slide began earlier, though. The stock is down 14.6% over one month and 15% from its September 22, 2026 close of $14.49, and none of the news provided explains that earlier drift.
Peer results from Brazil are not reassuring. Banco Bradesco's third-quarter report was mixed: revenue beat, EPS missed slightly, and asset quality weakened even as loans grew 11.1%. A London court ruling of October 16, 2026 ordering Santander to honour $90.8 million of Mozambique power-project bonds is small against a $178 billion market value and does not explain the move.
The debate has two sides. The constructive case is the franchise. Morningstar's September 18, 2026 note on Santander Chile, a neutral analysis, describes returns on equity in the upper teens and a cheap deposit base. The cautious case is fiscal: a Lula victory raises the risk of a weaker real and weaker Brazilian earnings. Three analysts rate the stock a hold. Their mean price target is $14.76, 16.5% above the price, and even the lowest target, $13.00, sits above it. Those targets were set before this election result, and the stock has not yet shown it can reach them.
What the evidence says
On the long term, the thesis is broken for now. Price is below both its 10-week and 40-week averages, 18% under the 52-week high of $15.05, and 27% above the 52-week low of $9.67. A week ago the stock was in an uptrend pulling back; it is now in a downtrend. Earlier this year it was keeping pace: it is up 5.0% year to date and 3.0% over six months. Over 50 days it trails the S&P 500 by 12.0 points and XLF by 12.7.
The previous report, on October 19, 2026, leaned positive with low conviction. It read the move as a pullback in an uptrend and named a weekly close below the 200-day average, then $12.93, as the level that would change that picture. That level has now given way. The stock trades well beneath it, the weekly trend has turned down, and the daily trend runs with it. For the next two to six weeks the balance of evidence leans negative. Conviction is high, 3 of 4 points: the daily and weekly trends agree, and the stock lags both the market and its sector.
The strongest case against this reading is that the selling is stretched. The 14-day RSI is 16, an extreme oversold reading, and the stock sits 16.5% under the mean analyst target. Volume at this point in the session is 61.9% below its 20-day average, so the drop has not come with heavy participation. Together these could produce a sharp bounce. It does not tip the balance because oversold bounces in a downtrend tend to stall at overhead resistance, and that resistance sits just above, at the 200-day average. The fourth conviction point is missing for this reason.
Levels that matter
The structure holds below $12.95, the 200-day average, where sellers have shown up on rallies. The $13.00 round number and the $13.10 swing zone sit just above it. A weekly close above $13.10 would end the downtrend. Beyond that, the next resistance is $14.00 and the 50-day average at $14.10.
The downside breakout level is a daily close below $12.00, only about $0.30 under the current price, roughly one day's average range (ATR $0.32). From there the first target is the $11.58 swing zone, then $9.67, the 52-week low, with $11.00 as support in between. The breakout would be wrong above $13.03, the 200-day average plus a quarter of ATR. Against that stop the math is 0.4 to 1 to the first target and 2.3 to 1 to the 52-week low. Neither reaches the 3 to 1 that makes a breakout worth the risk. It would take a much closer stop or a target below the 52-week low to change that.
What would change the picture
A weekly close above $13.10 would be the first sign that buyers are back, because it clears the 200-day average and the swing zone that has capped rallies. The non-price fact that could drive it is a credible fiscal signal from Lula's government that steadies the Brazilian real, or an earnings report showing Brazil's contribution holding up. Either would answer the concern behind Monday's fall.
What to watch
- Earnings, October 28, 2026: the number that matters is Brazil's share of profit, against the 15% it contributed in 2025, along with any comment on asset quality in the region. Bradesco's weaker asset quality sets the bar.
- Sector and macro: Bloomberg expects the Federal Reserve to leave rates unchanged this week, with Chair Kevin Warsh's messaging on December the focus. The Brazilian real's next move will reach SAN before its own results do.
- Valuation: at $12.315 the stock sits 16.5% below the $14.76 mean target and below the $13.00 low target. That gap closes only if the analysts' numbers are right or are cut.