The Bank of Russia announced its key rate decision on October 23 at 13:30 Moscow time. Polymarket ran a market on it, “Bank of Russia decision in October?”, with three outcomes: decrease, no change, increase. On October 20, three days out, “No Change” traded at 86.5¢, “Decrease” at 14.5¢ and “Increase” at 0.35¢.
For the October result itself, see the press release on cbr.ru. This piece is about how the market works, what those prices were saying, and how to approach the next decision on December 18.
Where the rate stood going into October
The Bank of Russia cut at every meeting of 2026 until September: to 15.5% in February, 15% in March, 14.5% in April, 14.25% in June and 14% in July. On September 11 the board held at 14%, saying that underlying price growth had picked up to 5–6% annualized and that inflation expectations, lending and wage growth remained elevated.
October was a “core” meeting — one of the four a year where the central bank publishes an updated medium-term forecast alongside the decision, followed by a press conference. There are eight rate meetings in 2026; the next one is December 18.
How a central bank decision market works
The market resolves on the change in the key rate after the meeting, compared with the level before it. The resolution source is the Bank of Russia’s press release. If no decision is published by the date of the next scheduled meeting, the market resolves to “No Change”.
Every outcome is its own Yes/No market. October had three: Decrease, No Change, Increase. Any cut — 25 bps or 100 bps — would resolve “Decrease” to Yes.
The December market, “Bank of Russia decision in December?”, splits outcomes by the size of the move. Prices as of October 20:
| Outcome | “Yes” price |
|---|---|
| 50+ bps decrease | 1.05¢ |
| 25 bps decrease | 24¢ |
| No change | 68.5¢ |
| 25 bps increase | 5¢ |
| 50+ bps increase | 0.6¢ |
The “Yes” prices add up to roughly 100¢ but not exactly — the difference is the bid–ask spread. For the full explanation of reading a price as a probability, see prices are probabilities.
What the October prices were saying
86.5¢ on “No Change” meant traders put a hold at about 86%. A cut was roughly a one-in-seven shot. A hike was close to ruled out.
That lined up with what analysts were writing after September: the easing cycle could pause until winter. The interesting part is the asymmetry. Buying “No Change” at 86.5¢ earns 13.5¢ per share if you’re right and loses 86.5¢ if the bank cuts anyway. Buying “Decrease” at 14.5¢ is the mirror image — small downside, large upside, but the probability is on your side only one time in seven.
The price isn’t a Bank of Russia forecast, and it isn’t ours. It’s the average view of whoever is trading, and in a small market a single large trader can shift it.
Liquidity
This market is far thinner than its Fed counterpart. The October market traded about $154,000 in total, with roughly $10,000 of resting liquidity in the book. The October Fed market, by comparison, has traded over $50 million.
What that means in practice: a large buy will fill at an average price well above the quote. On Prop Hub, orders fill against the Polymarket order book at a volume-weighted price, with no partial fills. If there isn’t enough on offer for the full amount, the order is rejected. The mechanics are in order book and slippage.
When the market is tradable on Prop Hub
Prop Hub lists markets that close within 2 days, based on the market’s end date on Polymarket.
The October market ended on October 24 at 03:59 UTC, so it opened on Prop Hub early on October 22. The December market ends on December 18 at 23:59 UTC and enters the window late on December 16 (UTC). Until then you can follow it on Polymarket, but not buy it on your account.
One practical point. The decision comes out at 13:30 Moscow time, while the market technically stays open until its end date. Once the press release is out, market makers pull their quotes on the losing outcomes, and nothing is left to buy at the old price.
Sizing risk around a rate decision
A rate decision is a binary event with a single moment of truth. A position either pays $1 per share or goes to zero, all on one day.
Two limits apply on a Prop Hub account:
- no more than 5% of the starting balance in one outcome — $500 on a $10,000 account;
- before each buy, the system checks that equity stays above the daily (10%) and total (20%) drawdown limits even if every open position goes to zero.
Example. On a $10,000 account, $500 of “No Change” at 86.5¢ buys about 578 shares. If the bank holds, the position makes around $78 before fees. If it cuts, you’re down $500. Earning that back takes six or seven correct trades of the same size.
So a contract at 85–90¢ isn’t “safe” — it’s expensive. On a funded account there’s one more thing to know: profit from positions bought above 90¢ or below 10¢ doesn’t count toward payouts. “Increase” at 0.35¢ falls outside that band.
Buying “Yes” on one outcome and “No” on its neighbor is often the same trade. “No Change: Yes” and “Decrease: No” make or lose money at almost the same moment. The limits count them as separate outcomes, but the risk is shared — decide once how much you want on that view.
Getting ready for December
- After the October decision, read the press release and any forward guidance. That’s what moves the December market most.
- Watch Russia’s weekly inflation data, which Rosstat publishes on Wednesdays. In a thin market it shifts the price noticeably.
- Compare December prices with analyst surveys. If the market and the consensus disagree, figure out why before you buy.
- On December 16–18, check the market in the app and look at book depth. Size the position to the book, not to the limit.
Account sizes and fees are on the plans page.
