Mathematics · Statistics

Treynor Systematic-Risk Ratio portfolio beta Solver

Rearrange the treynor systematic-risk ratio relationship and solve for portfolio beta.

Runs locally
Your numbers

Inputs and results stay in this browser. Change one value at a time to explore the relationship.

Your inputCalculatedPassed forward in chains
portfolio beta1.2
Reconstructed Treynor ratio0.066667

Calculation steps

  1. Use b=a/c with Treynor ratio=0.06666666666666667 and portfolio return minus risk-free return=0.08.
  2. portfolio beta=1.2.
  3. Substitution into c=a/b reconstructs 0.06666666666666667.

Understand Treynor Systematic-Risk Ratio: solve portfolio beta

One idea, three depths

Choose how deeply to explain Treynor Systematic-Risk Ratio: solve portfolio beta

Treynor Systematic-Risk Ratio: solve portfolio beta: Rearrange the treynor systematic-risk ratio relationship and solve for portfolio beta.

Age 5Explain it to a 5-year-oldStart with a picture

Imagine using Treynor Systematic-Risk Ratio: solve portfolio beta to answer this question: rearrange the treynor systematic-risk ratio relationship and solve for portfolio beta? Enter Treynor ratio and portfolio return minus risk-free return; the calculator shows portfolio beta. For example: portfolio return minus risk-free return=0.08 and portfolio beta=1.2 produce Treynor ratio=0.06666666666666667. The answer tells you portfolio beta.

Age 15Explain it to a 15-year-oldConnect it to the formula

The Treynor ratio divides excess return by systematic beta exposure. This page isolates portfolio beta and verifies it in the original relationship. The rule is b=a/c. Its input values are Treynor ratio, portfolio return minus risk-free return, and the main result is portfolio beta. For example: portfolio return minus risk-free return=0.08 and portfolio beta=1.2 produce Treynor ratio=0.06666666666666667.

CollegeExplain it at college levelState the model precisely

This calculator evaluates the stated treynor systematic-risk ratio: solve portfolio beta relation over the valid real-number domain stated below. The implemented relation is b=a/c, evaluated from Treynor ratio, portfolio return minus risk-free return to produce portfolio beta. The Treynor ratio divides excess return by systematic beta exposure. This page isolates portfolio beta and verifies it in the original relationship. It is meaningful only when beta and return use a compatible benchmark and horizon.

Inputs and valid domain

  • Treynor ratio must be a finite real number.
  • portfolio return minus risk-free return must be a finite real number.

Important boundary: It is meaningful only when beta and return use a compatible benchmark and horizon.

The formula

b=a/c

How the calculator works through it

It substitutes Treynor ratio, portfolio return minus risk-free return into the formula and exposes every numerical step above. The main output is portfolio beta, accompanied by Reconstructed Treynor ratio.

Read the result correctly

The portfolio beta is the direct answer to “rearrange the treynor systematic-risk ratio relationship and solve for portfolio beta.” Read it with the units shown beside the inputs; a sign, angle, percentage or rate changes what the number means.

A worked check

portfolio return minus risk-free return=0.08 and portfolio beta=1.2 produce Treynor ratio=0.06666666666666667.

Where this model stops being reliable

It is meaningful only when beta and return use a compatible benchmark and horizon.

Learn it by changing one value

Begin with the worked example, then change one value while keeping the others fixed. Compare the new result and calculation steps to identify which part of the formula changed.

Dictionary terms behind this calculator

Before studying the codeWhat you should know firstUse the calculator immediately, or check the foundations before reading the implementation.

These foundations help you understand why Treynor Systematic-Risk Ratio: solve portfolio beta works. They never block the calculator, and “optional” means useful context rather than a hidden requirement.

Hard requirements

  • Reading formulas and substituting values

    Treynor Systematic-Risk Ratio: solve portfolio beta uses b=a/c. You need to recognise what each side represents before substituting the stated inputs or rearranging the relationship.

    Review this foundation about 4 min

Strong support

  • Averages and representative values

    Representative values help you judge what the Treynor Systematic-Risk Ratio: solve portfolio beta inputs summarise and what the result can legitimately describe.

    Review this foundation about 5 min

Optional enrichment

  • Spread and measurement variation

    Variation is not always part of the Treynor Systematic-Risk Ratio: solve portfolio beta formula, but it helps you judge how stable a reported result may be.

    Review this foundation about 6 min
Learn the missing foundationsI already know these — show the code

Mathematics → algorithm → program

Implement this calculation in code

These are direct reference implementations of the calculator's principal relationship and first output. They run locally and include a small known-answer check where the language supports it.

Algorithm

  1. Read Treynor ratio, portfolio return minus risk-free return.
  2. Evaluate the principal relationship: b=a/c.
  3. Return portfolio beta and check the domain conditions described above.
Python
            from math import *

def treynor_systematic_risk_ratio_solve_b(c, a) -> float:
    return (a / c)

assert abs(treynor_systematic_risk_ratio_solve_b(0.06666666666666667, 0.08) - 1.2) < 1e-6 * max(1.0, abs(1.2))
          
Current calculator valuesUpdates when you change an input above.
              
            
C
            #include <assert.h>
#include <math.h>

double treynor_systematic_risk_ratio_solve_b(double c, double a) {
    return (a / c);
}

int main(void) {
    const double expected = 1.2;
    const double actual = treynor_systematic_risk_ratio_solve_b(0.06666666666666667, 0.08);
    assert(fabs(actual - expected) < 1e-6 * fmax(1.0, fabs(expected)));
}
          
Current calculator valuesUpdates when you change an input above.
              
            
C++
            #include <cassert>
#include <cmath>
#include <numbers>

double treynor_systematic_risk_ratio_solve_b(double c, double a) {
    return (a / c);
}

int main() {
    constexpr double expected = 1.2;
    const double actual = treynor_systematic_risk_ratio_solve_b(0.06666666666666667, 0.08);
    assert(std::fabs(actual - expected) < 1e-6 * std::fmax(1.0, std::fabs(expected)));
}
          
Current calculator valuesUpdates when you change an input above.
              
            
Linux x86-64 assembly

x86-64 NASM · System V ABI · Linux · SSE2 with libm where required

            ; double treynor_systematic_risk_ratio_solve_b(double c, double a)
; Linux x86-64 NASM · System V ABI · first eight doubles in xmm0–xmm7
global treynor_systematic_risk_ratio_solve_b
section .text

treynor_systematic_risk_ratio_solve_b:
    push rbp
    mov rbp, rsp
    sub rsp, 32
    movsd [rbp-8], xmm0
    movsd [rbp-16], xmm1
    movsd xmm0, [rbp-16]
    divsd xmm0, [rbp-8]
    movsd [rbp-24], xmm0
    movsd xmm0, [rbp-24]
    leave
    ret
          
Current calculator valuesUpdates when you change an input above.
              
            
MATLAB
            function result = treynor_systematic_risk_ratio_solve_b(c, a)
    result = (a / c);
end
          
Current calculator valuesUpdates when you change an input above.
              
            
Wolfram Language
            ClearAll[mwCalculate];
mwCalculate[c_, a_] := (a / c);
          
Current calculator valuesUpdates when you change an input above.
              
            

Continue in mathematical software

The downloaded file includes your current inputs and first calculated result. It is created locally.

Floating-point answers can differ slightly by language, compiler and processor. Compare within a suitable tolerance rather than assuming every decimal representation will be identical.

Supporting sourcesAcademic referencesPrimary standards, textbooks and complete citations

Standards, reading and academic references

Use the calculator as the worked interaction, then consult the primary standards and academic textbooks listed below. MW SysArc links to the original sources; the explanation on this page is original and does not reproduce them.

Introductory Statistics 2e

Read the free OpenStax statistics textbook
Cite this book
APA 7
Illowsky, B., & Dean, S. (2023). Introductory statistics 2e. OpenStax. https://openstax.org/books/introductory-statistics-2e/pages/1-introduction
MLA 9
Illowsky, Barbara, and Susan Dean. Introductory Statistics 2e. OpenStax, 2023, https://openstax.org/books/introductory-statistics-2e/pages/1-introduction.
Chicago author-date
Illowsky, Barbara, and Susan Dean. 2023. Introductory Statistics 2e. Houston, TX: OpenStax. https://openstax.org/books/introductory-statistics-2e/pages/1-introduction.

OpenStax entries are free to read online. Follow the licence shown on each linked source before redistributing or adapting its content.

Reuse the page responsiblyCite this pageAPA, MLA, Chicago, Harvard, BibTeX and RIS

These formats cite this calculator page itself. They are separate from the academic references above, which support the mathematical method and terminology.

APA 7

MW SysArc. (2026, July 21). Treynor Systematic-Risk Ratio portfolio beta Solver. MW SysArc Tools. https://math.mwsysarc.com/statistics/treynor-systematic-risk-ratio-portfolio-beta-solver

MLA 9

MW SysArc. “Treynor Systematic-Risk Ratio portfolio beta Solver.” MW SysArc Tools, 21 July 2026, https://math.mwsysarc.com/statistics/treynor-systematic-risk-ratio-portfolio-beta-solver. Accessed 31 Aug. 2026.

Chicago 17

MW SysArc. “Treynor Systematic-Risk Ratio portfolio beta Solver.” MW SysArc Tools. Published July 21, 2026. Accessed August 31, 2026. https://math.mwsysarc.com/statistics/treynor-systematic-risk-ratio-portfolio-beta-solver.

Harvard

MW SysArc (2026) ‘Treynor Systematic-Risk Ratio portfolio beta Solver’, MW SysArc Tools. Published 21 July 2026. Available at: https://math.mwsysarc.com/statistics/treynor-systematic-risk-ratio-portfolio-beta-solver (Accessed: 31 August 2026).

BibTeX and RIS records

BibTeX

@misc{mwsysarc_treynor_systematic_risk_ratio_solve_b_2026,
  author = {{MW SysArc}},
  title = {Treynor Systematic-Risk Ratio portfolio beta Solver},
  howpublished = {MW SysArc Tools},
  year = {2026},
  url = {https://math.mwsysarc.com/statistics/treynor-systematic-risk-ratio-portfolio-beta-solver},
  note = {Published July 21, 2026; accessed August 31, 2026}
}

RIS

TY  - ELEC
AU  - MW SysArc
TI  - Treynor Systematic-Risk Ratio portfolio beta Solver
T2  - MW SysArc Tools
PY  - 2026
DA  - 2026-07-21
Y2  - 2026-08-31
UR  - https://math.mwsysarc.com/statistics/treynor-systematic-risk-ratio-portfolio-beta-solver
N1  - Published July 21, 2026
ER  -

Clear answers

Frequently asked questions

What does the Treynor Systematic-Risk Ratio: solve portfolio beta do?

Rearrange the treynor systematic-risk ratio relationship and solve for portfolio beta.

How does the Treynor Systematic-Risk Ratio: solve portfolio beta work?

The calculator applies b=a/c. The Treynor ratio divides excess return by systematic beta exposure. This page isolates portfolio beta and verifies it in the original relationship.

What can I learn from the Treynor Systematic-Risk Ratio: solve portfolio beta?

It connects the mathematical rule to your chosen numbers and shows each calculation step. Change one input at a time to see how the result responds.

Does MW SysArc receive or store what I enter?

No. The calculation runs locally in your browser. MW SysArc does not receive or store your calculation inputs.

How should I use the result?

Use the steps to understand the method, then verify important school or professional work using the notation and rounding rules required in your setting.

Last reviewed . Calculations tested .

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