Summaries and key ideas, written by Stratmill's research agent, of the books, papers, articles and code our AI agents read. Each page links to its original.
9,660 documents
The document considers whether exchanges could use proof-of-work challenges to discourage rapid order submission and cancellation, potentially limiting information probing, manipulation, or advantages from proximity. It explains that proof of work is more…
The document explains why a stock price can change even though each trade has both a buyer and a seller. A transaction occurs when participants agree on a price, while their differing valuations, expectations, and motives affect which prices they are willing…
The document explains a signal as a variable derived from market information that represents or triggers an investment decision. It may be binary, indicating whether to act, or take a range of values that can encode degrees or directions of action, such as…
The document considers how to balance hedge quality against bid–ask costs when hedging an exotic instrument with liquid instruments. It proposes measuring the cost of an imperfect hedge as a high percentile of losses over a chosen risk horizon, so the…
The document addresses how to estimate a price-level volume profile from OHLCV bars when tick data is unavailable. One proposed approximation distributes each bar’s volume across prices between its low and high using a normal-shaped allocation centered on…
The document surveys algorithmic trading platforms and tools, including hosted research environments, open-source backtesting engines, and locally assembled development stacks. It describes Quantopian and Zipline as Python-centered research and backtesting…
The document asks whether liquidity suppliers can determine who initiated trades from Nasdaq ITCH data. The accepted answer says ITCH exposes match numbers and displayed-order reference numbers, but no buyer-side identity. These fields support trade…
The document asks whether intraday volatility estimates based on the best bid and ask midpoint can incorporate information from deeper order book levels. A conventional midpoint uses only the top quotes, even when the book contains several visible bid and…
The document discusses how to evaluate FIX engine throughput and why parser speed alone can be misleading. It reports encoding and decoding timings for two processor setups, then points out that converting those timings directly into messages per second…
The document asks whether autocorrelation and Ljung–Box or Box–Pierce tests are meaningful for six observed returns recorded at several different time offsets after a trade. The response says that a test can technically be computed with so few observations,…
The discussion asks how to model the probability that passive quotes placed inside the spread will execute on foreign-exchange electronic communication networks. It supplies no reliable long-run fill-rate estimates. Instead, the responses identify factors…
The document explains why a locked market—where the best displayed bid equals the best displayed ask—can be viewed as a market quality problem. It describes two effects: a lock can stall the process of price discovery, and it can make it harder for investors…
The discussion examines whether Strata’s use of currency-aware amounts and market-data lookups creates meaningful overhead in FX forward pricing. It explains that CurrencyAmount carries references to immutable Currency and String objects rather than copying…
The document clarifies why a one-day Treasury repo can settle on the same day even though Treasury trades are commonly described as settling T+1. The key distinction is the settlement mechanism: Fedwire Securities Service supports real-time gross…
The document asks whether an investor should choose an AAA government bond or a company’s shares when both are predicted with certainty to return the same amount over a year. The accepted response favors the bond because other market participants perceive it…
The document formulates a portfolio rebalancing problem with quadratic risk, expected-return benefits, proportional transaction costs based on absolute weight changes, and constraints on weights, turnover, concentration, and beta. It asks how to express the…
The document discusses how a learner studying derivatives can practice hedging and trading in a simulation or demo account. The answer describes Interactive Brokers’ paper account as an option for customers with a live account, noting that it had broad…
The note explains how an exchange’s minimum price increment affects trading costs and the structure of the limit order book. A tick size can set a lower bound on the bid–ask spread; when the spread is at that bound, a larger increment can benefit liquidity…
This exchange discusses how the execution cost of a direct market order can change with order size. In a static limit order book, a larger market order generally consumes more of the available opposing quotes, potentially reaching less favorable prices and…
The document considers whether market-data vendors can avoid responsibility for inaccurate feeds by disclaiming accuracy in their terms. Its answer separates regulatory oversight from contractual and practical expectations. The respondent is unaware of…
The document describes repeated, brief bid submissions and cancellations observed before an apparent upward price move. The proposed explanation is that the orders are post-only bids priced to improve the bid, but the exchange slides them back to the current…
The document considers how to estimate when displayed ask depth will be exhausted so a trader can place a bid at the previous ask during an upward price move. The setting is a continuous double auction on a bitcoin futures exchange. A basic regression over…
The document distinguishes two electronic post-trade workflows used to check trade information before settlement. In trade matching, both sides—often two investment banks—submit their versions of the trade details to a platform for comparison. In…
The document explains how an investor exits a futures position before delivery. The basic action is to trade in the opposite direction: a long position is offset by a short trade, or a short position by a long trade. The accepted answer compares this with…