SIEB vs IBKR

For growth investors, Siebert Financial Corp.

(SIEB) is the stronger pick with 16. 1% revenue growth year-over-year, versus 9. 8% for Interactive Brokers Group, Inc. (IBKR). Siebert Financial Corp. (SIEB) offers the better valuation at 5. 3x trailing P/E, making it the more compelling value choice. Analysts rate Interactive Brokers Group, Inc. (IBKR) a "Buy" — based on 19 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Siebert Financial Corp.

(SIEB) is the cheapest at 5. 3x versus Interactive Brokers Group, Inc. at 39. 2x.

Over the past 5 years, Interactive Brokers Group, Inc.

(IBKR) delivered a total return of +404. 9%, compared to -49. 1% for Siebert Financial Corp. (SIEB). Over 10 years, the gap is even starker: IBKR returned +857. 9% versus SIEB's +63. 0%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Siebert Financial Corp.

(SIEB) is the lower-risk stock at 1. 58β versus Interactive Brokers Group, Inc. 's 1. 93β — meaning IBKR is approximately 22% more volatile than SIEB relative to the S&P 500. On balance sheet safety, Interactive Brokers Group, Inc. (IBKR) carries a lower debt/equity ratio of 0% versus 8% for Siebert Financial Corp. — giving it more financial flexibility in a downturn.

By revenue growth (latest reported year), Siebert Financial Corp.

(SIEB) is pulling ahead at 16. 1% versus 9. 8% for Interactive Brokers Group, Inc. (IBKR). On earnings-per-share growth, the picture is similar: Siebert Financial Corp. grew EPS 57. 1% year-over-year, compared to 28. 3% for Interactive Brokers Group, Inc.. Higher growth typically commands a higher valuation multiple — check whether the premium P/E or P/S is justified by the growth rate using the PEG ratio.

Siebert Financial Corp.

(SIEB) is the more profitable company, earning 16. 5% net margin versus 9. 6% for Interactive Brokers Group, Inc. — meaning it keeps 16. 5% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: IBKR leads at 86. 0% versus 21. 7% for SIEB. At the gross margin level — before operating expenses — IBKR leads at 89. 8%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

In this comparison, IBKR (0.

3% yield) pays a dividend. SIEB does not pay a meaningful dividend and should not be held primarily for income.

For long-horizon retirement investors, Interactive Brokers Group, Inc.

(IBKR) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (+857. 9% 10Y return). Siebert Financial Corp. (SIEB) carries a higher beta of 1. 58 — meaning larger drawdowns in market downturns, which matters significantly when you cannot wait years for a recovery. Both have compounded well over 10 years (IBKR: +857. 9%, SIEB: +63. 0%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Financial Services sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both.

In terms of investment character: SIEB is a small-cap high-growth stock; IBKR is a mid-cap quality compounder stock. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.