Welcome to the T+1 community

Empowering the sophisticated individual investor with robust statistical tools.

Emphasis on **predictive** and **prescriptive** financial use cases.

The moniker T+1, represents the forward walk, or future prediction as the standard mode of analysis. Enthusiasts with a background in econometrics, this equates to using ex-ante dynamic forecasting as the preferred method for predictions. Simulation models are set up the equivalent way, forward walks in time. This is in contrast to a static ex-post assumption, an invalid approach when scenarios are to be realistic. Simulations are directed forward in time using only information up to T(0). T+1 denotes T(time) next period or next tick. T(0) would denote today, or real time, and T(-1) would denote previous tick or time period.

Figure 1 : Real-Time ETF Correlation Network – the ‘Market Map’ – live on open trading days from 9:30-4 PM EST.

Data Source and Timing

- 114 ETFs selected from source across the entire canvas shown on finviz.
- Uses intraday real time data, updating every 5 seconds from 9:30 AM to 4:00 PM EST.
- Natural log first differences of the raw price series are used to estimate the return.

Visualization Components

- Correlation Graph/Network – This high dimensional matrix is presented in a 2D plane for clarity. Correlations are measured from 9:30 AM EST, the data frame is updated every 5 seconds, anchored at 9:30 AM EST.
- Time Series Data – Displays the 5 second return of each ETF on the figure’s right side, natural log of the price differences, ln(T(0)) – ln(T(-1)) are plotted via sparklines.
- Projection Technique – Utilizes the Sammon’s projection for mapping ETF’s onto a 2D plane, emphasizing the importance of spatial location. This method results in an ETF embedding space. ETFs positioned closer together exhibit more similar behaviors than those further apart, with respect to the correlation of itself to all other ETFs.

Real-Time Exploratory Factor Analysis

- Illustrated by a row of circles at the bottom, representing ongoing Factor analysis with varimax rotation.
- The factors are sorted by the number of variables it explains(eigenvalue), offering insight into market dominance throughout the day. Think of these as strings on a musical instrument, number of dominant strings active for the day and how loud they are vibrating.

Market Dynamics and Correlation Insights resulting from viewing the market map

- Volatility and Market Factors – The shape of the network changes with market volatility, becoming denser on high-volatility days. Some days 1 factor explains over 50% of the total market variance, usually under extreme stress, i.e. a selloff, or a melt-up.
- The map, due to being an EMBEDDING, will show clear groups, if they exist. Clusters will appear on regions of the map based on type of asset, like equity, volatility, negative correlation products, debt, commodity, currency for example. Anomalies or outliers can be observed by viewing an ETF’s movement on the graph over the day as well its location in the embedding.

Correlation Indicators

- Color-coded to indicate positive (green) or negative (red) correlations.
- Line thickness signifies the strength or degree of correlation between ETFs.

Interactive Features

- Hovering over a node reveals other ETFs that are correlated as well as the sorted dominant factor observed for the day.
- Explore by clicking the left gutter for filters, right gutter for the entities or nodes in the 2D graph drill downs, the canvas itself has tabs running vertically for different data science methods being run in the background.
- Left gutter enables filtering on different correlation strengths, as well as taking the absolute value if required for the filter to be applied.

Figure 2 : Sample output from the Tail Hedge Simulator is focused on calculating put prices when a large swift decline occurs in an ETF’s simulated future. Inspired by tail hedge strategies, Black Swan events, Spitznagel and Mandelbrot authors.

**Example Use Case –**

“Right now, what market PUT option would provide me the most left tailed convexity assuming 30 days into the future a 20% percent decline will occur in QQQ”. In other words, examine all the actual QQQ expiration date CROSS strike price PUT option combinations post expiry T + 30 days. What are each combination’s respective return estimates based on a forward walk simulation. Return is defined as current market ASK PUT price vs. the expected MAX of that PUT option price in the 20% decline period. This aligns with finding convex vehicles or explosive payoff combinations, if they exist.

“I now want to simulate how many PUT contracts I need to purchase to achieve a 100% hedge when QQQ has an expected 20% decline”. My total QQQ long position $ net change with the hedge vs. the # of contracts, a plot and table would be great to help me make a hedge coverage vs. cost decision.

This summarizes the use cases for the Tail Hedge Simulator.