Binary Options · Source-based explainerHow Kalshi’s rolling order-group limit works
Kalshi lets users group orders under a limit on contracts matched in a rolling 15-second window.
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World Forex News · Analysis
Forex, crypto and brokerage article archive · Page 2
Analysis and explainers on currency markets, crypto, brokerage and event contracts.
Page 2/27 · 25–48 / 629
Binary Options · Source-based explainer
Forex · Source-based explainerHow exchange rates change the US international investment position
The BEA expresses US external assets and liabilities in dollars. The net international investment position subtracts liabilities from assets.
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Crypto · Source-based explainerHow EIP-7623 changes gas estimation for calldata
EIP-7623 sets a transaction gas floor tied to calldata. A zero byte contributes one token and a nonzero byte four.
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Brokerage · Source-based explainerWhat brokers disclose alongside an investment simulation
FINRA Rule 2214 requires covered investment analysis tools to explain their criteria, method, limitations and key assumptions.
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Binary Options · Source-based explainerHow to rebuild a Kalshi order book after a missed update
The WebSocket sends an order-book snapshot followed by deltas. Kalshi’s seq counts messages on a subscription.
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Forex · Source-based explainerWhat the ECB wage tracker tells us about 2027
On 4 November the ECB’s headline tracker indicated negotiated wage growth of 2.3% for 2026 and 2.8% for the first half of 2027.
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Crypto · Source-based explainerHow ERC-7201 separates storage for upgradeable modules
ERC-7201 specifies namespaced storage. Each module groups fields in a struct and derives a storage root from a namespace identifier.
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Brokerage · Source-based explainerHow FINRA Rule 5130 adds up restricted interests for IPOs
FINRA Rule 5130 restricts purchases of covered new equity issues by accounts in which certain persons have beneficial interests.
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Binary Options · Source-based explainerWhat happens between an official result and Polymarket settlement
For Polymarket markets using the UMA Optimistic Oracle, a proposed outcome enters a two-hour challenge period. An undisputed proposal is accepted.
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Forex · Source-based explainerWhy US import prices can stand still when tariffs rise
The US Bureau of Labor Statistics excludes customs duties from the prices used in its import price indexes.
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Crypto · Source-based explainerHow ERC-7575 links multiple assets to one share token
ERC-7575 extends the ERC-4626 model so several asset-specific vaults can share a token representing ownership shares.
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Brokerage · Source-based explainerWhen the SEC’s customer breach notice period starts
The amended Regulation S-P requires covered firms to maintain written incident-response procedures.
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Binary Options · Source-based explainerWhen one No token corresponds to several Yes tokens
In a Polymarket negative-risk event, one No token for an outcome can be converted into one Yes token for each other outcome in the group.
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Forex · Source-based explainerHow to measure last-look rejections in FX
The FX Global Code describes last look as a check on price and request validity before acceptance. Principle 17 calls for transparency about its use.
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Crypto · Source-based explainerWhat Ethereum’s BLS12-381 pairing operation verifies
EIP-2537 adds built-in operations for BLS12-381, including a pairing check. It evaluates a mathematical relation among the supplied points.
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Brokerage · Source-based explainerWhy US broker-dealers calculate customer and PAB reserves separately
SEC Rule 15c3-3 provides separate reserve computations for customer accounts and proprietary accounts of brokers and dealers, or PAB.
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Binary Options · Source-based explainerWhy log loss penalizes a wrong 99% forecast so heavily
Log loss scores the probability assigned to the actual outcome. If Yes has probability p, the loss is −ln(p) when Yes occurs and −ln(1−p) when No occurs.
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Forex · Source-based explainerWhat net tightening means in the Fed’s loan officer survey
The October 2026 Senior Loan Officer Opinion Survey covers changes in lending standards, terms and demand, mainly in the third quarter.
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Crypto · Source-based explainerWhy a BIP 340 public key takes 32 bytes
BIP 340 encodes a secp256k1 Schnorr public key using only its X coordinate.
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Brokerage · Source-based explainerWhy the DORA register links contracts, services and functions
DORA Article 28(3) requires covered financial entities to keep a register of contractual arrangements for third-party ICT services.
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Binary Options · Source-based explainerWhat an exchange checks before an event-contract trade
Under the CFTC’s electronic trading risk principles, US designated contract markets apply exchange-based pre-trade controls to all electronic orders.
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Forex · Source-based explainerECB keeps three rates unchanged: why the name beside each number matters
The deposit, refinancing and marginal lending rates serve different roles. Comparing central banks starts with identifying the policy instrument being quoted.
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Crypto · Source-based explainerERC-2771: paying for gas and authorising an action are separate roles
Meta-transactions distinguish the signer, gas relay, trusted forwarder and receiving application. A sponsored interaction still needs the correct authorisation context.
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Brokerage · Source-based explainerFINRA 3241: a customer’s trust role needs its own conflict review
Beneficiary and fiduciary appointments involve a different workflow from ordinary account servicing. The firm needs to connect notice, assessment and written decision.
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