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Correlation Analysis

Interactive Brokers Group, Inc. Class A Common Stock vs NetFlix Inc

IBKR vs NFLX

+0.871

Very strong positive

When one moves up, the other tends to follow.

IBKR logo

Interactive Brokers Group, Inc. Class A Common Stock

IBKR

Interactive Brokers is a large, automated, retail and institutional brokerage that boasted nearly $780 billion in customer equity at the end of 2025. The company cut its teeth as a market maker, introducing US financial markets to automated and algorithmic training before expanding into brokerage services in 1993. The firm has a wide-ranging client base, with its best-in-class order execution and extremely low margin lending rates catering to a sophisticated audience of hedge funds, proprietary traders, and introducing brokers that account for about 45% of the firm's commissions. With operations spanning more than 160 electronic exchanges, 36 countries, and 28 currencies, Interactive Brokers caters to a global clientele, with more than 80% of active accounts sitting outside the US.

Market cap 30.6B · 3,182 employees

NFLX logo

NetFlix Inc

NFLX

Netflix's relatively simple business model involves only one business, its streaming service. It has the biggest television entertainment subscriber base in both the United States and the collective international market, with more than 300 million subscribers globally. Netflix has exposure to nearly the entire global population outside of China. The firm has traditionally avoided a regular slate of live programming or sports content, instead focusing on on-demand access to episodic television, movies, and documentaries. The firm introduced ad-supported subscription plans in 2022, giving the firm exposure to the advertising market in addition to the subscription fees that have historically accounted for nearly all its revenue.

Market cap 417.7B

Apr 9, 2021 — Apr 7, 2026Daily1,254 data pointsStockStockConsumer

Time Series

Relative Performance

Green: IBKRGray: NFLX36 of 1,254 points (sampled)

Who Moves First

NFLX leads IBKR by 6 days

NFLX tends to move before IBKR.

After testing 13 timing shifts, the strongest relationship was +0.875 (they moved in the same direction).

Do They Crash Together?

Correlation by Market Regime

How these series behave when markets are rising, falling, or diverging. A correlation that holds in drawdowns is very different from one that only works in rallies.

Both Rising

+0.702

18 periods · Return correlation when both series rose

Both Falling

+0.392

9 periods · Return correlation when both series fell

Diverging

-0.926

8 periods · Return correlation when series moved apart

R-Squared

75.9%

Share of variance in one series explained by the other.

Trend Agreement

59.3%

How often both series moved in the same direction period-to-period.

Overlap Quality

1,254

Deep shared window — 1,254 usable pairs.

Significance

p < 0.001

95% CI: [0.857, 0.884]

Scatter

XY Regression

9.41020304050607077.810.720406080100120133.2Interactive Brokers Group, Inc. Class A Common StockNetFlix IncData pointsFit (r = 0.871)

Pipeline

Data quality details

Pipeline Summary

1,254 paired data points survived the daily window.

Raw input

1,254

1,254

Normalized

1,254

1,254

Prepared

1,254

1,254

Aligned

1,254

1,254

Invalid removed

0

A: 0 / B: 0

Duplicates removed

0

A: 0 / B: 0

Alignment drops

0

A: 0 / B: 0

Series A

IBKR logo

Interactive Brokers Group, Inc. Class A Common Stock

IBKR

Market cap 30.6B · 3,182 employees

Stock · 1,254 raw → 1,254 prepared

Series B

NFLX logo

NetFlix Inc

NFLX

Market cap 417.7B

Stock · 1,254 raw → 1,254 prepared

Sign agreement

100.0%

How often both values share the same sign.

Zero crossings

14

Estimated crossover points between normalized spreads.

Slope

1.4377

Linear regression slope.

Intercept

16.6359

Linear regression intercept.

Related Extremes

Highest and Lowest Correlated

Saved 7 hours ago · ID: stock-ibkr-vs-stock-nflx-daily