VOL. XCIV, NO. 247

★ FINANCIAL TOOLS & SERVICES DIRECTORY ★

PRICE: 5 CENTS

Saturday, November 8, 2025

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Tool Comparison

FlowAlgo vs IBorrowDesk comparison

Compare pricing, supported platforms, categories, and standout capabilities to decide which tool fits your workflow.

Quick takeaways

FlowAlgo adds Options & Derivatives, and Dark Pool & Off-Exchange coverage that IBorrowDesk skips.

IBorrowDesk includes Short Interest, and Watchlist categories that FlowAlgo omits.

IBorrowDesk keeps a free entry point that FlowAlgo lacks.

In depth comparison

FlowAlgo

flowalgo.com

Realtime options order flow with equity block and dark pool data. All plans include the same feature set with monthly, quarterly, or annual billing. Paid trial available for two weeks. Dark pool prints are reported with delays (anywhere from hours to the next day), and equity block data can lag by up to ~20 minutes under exchange rules.

Platforms

Web

Pricing

Subscription

Quick highlights

Realtime monitoring of options order flow, with unusual activity detection and tracking of Intermarket Sweep Orders and option block trades.
Equity block and dark pool order data, paired with a dedicated “Dark Pool Insights” module.
Dark pool data is delayed until officially reported; equity block data may lag ~20 minutes. Options flow itself streams with typical latency of half a second to 15 seconds.
Alpha AI signals during market hours, flagging predictive momentum shifts and Long/Short/Hedge opportunities.
Historical database with access back to mid-2017, including prior days’ flow activity.

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IBorrowDesk

iborrowdesk.com

Tracks stock-loan availability and borrow fee data as reported by Interactive Brokers (IBKR). Updates roughly every 15 minutes during North American trading hours and hourly elsewhere on weekdays. The data reflects IBKR only and not the wider market. The site is unaffiliated with IBKR; displayed quotes are provided by IEX. A paid Patron tier adds longer history, CSV exports, and more tracking capacity.

Platforms

Web

Pricing

FreeSubscription

Quick highlights

Borrow fee percentages and shortable share availability, sourced directly from Interactive Brokers public datasets.
Intraday refresh cadence: ~15 minutes during North American trading hours; hourly outside of them on weekdays.
Per-ticker pages show recent borrow snapshots with timestamps, plus options to add tickers to a watchlist or set alerts.
Patron plan ($10/month) unlocks 5+ years of history versus 1 year on free, enables CSV historical export, and expands watchlist capacity to ~50 securities.
Scope limited to Interactive Brokers—availability and fees may differ across other brokers.

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Where they differ

FlowAlgo

Distinct strengths include:

Options & Derivatives Dark Pool & Off-Exchange

Realtime monitoring of options order flow, with unusual activity detection and tracking of Intermarket Sweep Orders and option block trades.
Equity block and dark pool order data, paired with a dedicated “Dark Pool Insights” module.
Dark pool data is delayed until officially reported; equity block data may lag ~20 minutes. Options flow itself streams with typical latency of half a second to 15 seconds.
Alpha AI signals during market hours, flagging predictive momentum shifts and Long/Short/Hedge opportunities.

IBorrowDesk

Distinct strengths include:

Short Interest Watchlist

Borrow fee percentages and shortable share availability, sourced directly from Interactive Brokers public datasets.
Intraday refresh cadence: ~15 minutes during North American trading hours; hourly outside of them on weekdays.
Per-ticker pages show recent borrow snapshots with timestamps, plus options to add tickers to a watchlist or set alerts.
Patron plan ($10/month) unlocks 5+ years of history versus 1 year on free, enables CSV historical export, and expands watchlist capacity to ~50 securities.

Feature-by-feature breakdown

Attribute	FlowAlgo	IBorrowDesk
Categories Which research workflows each platform targets	Shared: Alerts Unique: Options & Derivatives, Dark Pool & Off-Exchange	Shared: Alerts Unique: Short Interest, Watchlist
Asset types Supported asset classes and universes	Stocks, ETFs, Options	Stocks, ETFs
Experience levels Who each product is built for	Beginner, Intermediate, Advanced	Beginner, Intermediate, Advanced
Platforms Where you can access the product	Web	Web
Pricing High-level pricing models	Subscription	Free, Subscription
Key features Core capabilities called out by each vendor	Unique Realtime monitoring of options order flow, with unusual activity detection and tracking of Intermarket Sweep Orders and option block trades. Equity block and dark pool order data, paired with a dedicated “Dark Pool Insights” module. Dark pool data is delayed until officially reported; equity block data may lag ~20 minutes. Options flow itself streams with typical latency of half a second to 15 seconds. Alpha AI signals during market hours, flagging predictive momentum shifts and Long/Short/Hedge opportunities. Historical database with access back to mid-2017, including prior days’ flow activity. FlowAlgo Levels (“Institutional Zones”), highlighting support and resistance from historical block and dark pool transactions.	Unique Borrow fee percentages and shortable share availability, sourced directly from Interactive Brokers public datasets. Intraday refresh cadence: ~15 minutes during North American trading hours; hourly outside of them on weekdays. Per-ticker pages show recent borrow snapshots with timestamps, plus options to add tickers to a watchlist or set alerts. Patron plan ($10/month) unlocks 5+ years of history versus 1 year on free, enables CSV historical export, and expands watchlist capacity to ~50 securities. Scope limited to Interactive Brokers—availability and fees may differ across other brokers. Site disclaimer notes no affiliation with IBKR; market quotes shown alongside borrow data come from IEX.
Tested Verified by hands-on testing inside Find My Moat	Not yet	Not yet
Editor pick Featured inside curated shortlists	Standard listing	Standard listing

Frequently Asked Questions

Which workflows do FlowAlgo and IBorrowDesk both support?

Both platforms cover Alerts workflows, so you can research those use cases in either tool before digging into the feature differences below.

Which tool offers a free plan?

IBorrowDesk offers a free entry point, while FlowAlgo requires a paid subscription. Review the pricing table to see how the paid tiers compare.

How can you access FlowAlgo and IBorrowDesk?

Both FlowAlgo and IBorrowDesk prioritize web or desktop access. Investors wanting a mobile-first workflow may need to rely on responsive web views.

What unique strengths set the two platforms apart?

FlowAlgo differentiates itself with Realtime monitoring of options order flow, with unusual activity detection and tracking of Intermarket Sweep Orders and option block trades., Equity block and dark pool order data, paired with a dedicated “Dark Pool Insights” module., and Dark pool data is delayed until officially reported; equity block data may lag ~20 minutes. Options flow itself streams with typical latency of half a second to 15 seconds., whereas IBorrowDesk stands out for Borrow fee percentages and shortable share availability, sourced directly from Interactive Brokers public datasets., Intraday refresh cadence: ~15 minutes during North American trading hours; hourly outside of them on weekdays., and Per-ticker pages show recent borrow snapshots with timestamps, plus options to add tickers to a watchlist or set alerts..

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