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ISIN
US8852155584
CUSIP
885215558
Issuer
Thornburg
Inception Date
Dec 23, 2002
Min. Investment
$5,000
Distribution Policy
Distributing
Asset Class
Multi-Asset
Asset Class Size
Large-Cap
Asset Class Style
Value

Share Price Chart


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Performance

TIBAX Performance Chart

Thornburg Investment Income Builder Fund (TIBAX) is up 17.6% since the beginning of the year. TIBAX is currently trading at $38 per share. Investors who bought $1,000 worth of TIBAX shares 5 years ago would now be looking at an investment worth $2,141.


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S&P 500 Index

Returns By Period

Thornburg Investment Income Builder Fund (TIBAX) has returned 17.56% so far this year and 37.19% over the past 12 months. Over the last ten years, TIBAX has returned 12.54% per year, falling short of the S&P 500 Index benchmark, which averaged 13.88% annually.


Thornburg Investment Income Builder Fund

1D
0.34%
1M
0.61%
YTD
17.56%
6M
19.01%
1Y
37.19%
3Y*
25.13%
5Y*
16.45%
10Y*
12.54%

Benchmark (S&P 500 Index)

1D
-0.37%
1M
-0.01%
YTD
9.16%
6M
8.64%
1Y
25.22%
3Y*
19.78%
5Y*
11.99%
10Y*
13.88%
*Multi-year figures are annualized to reflect compound growth (CAGR)

TIBAX Monthly Returns History

Based on dividend-adjusted daily data since Dec 24, 2002, TIBAX's average daily return is +0.04%, while the average monthly return is +0.88%. At this rate, an investment would double in approximately 6.6 years.

Historically, 64% of months were positive and 36% were negative. The best month was Nov 2020 with a return of +13.7%, while the worst month was Mar 2020 at -18.8%. The longest winning streak lasted 15 consecutive months, and the longest losing streak was 7 months.

On a daily basis, TIBAX closed higher 54% of trading days. The best single day was Oct 13, 2008 with a return of +8.4%, while the worst single day was Mar 16, 2020 at -11.7%.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
20266.20%6.89%-3.26%4.48%2.00%0.46%17.56%
20253.99%3.16%1.29%1.02%4.41%4.16%1.17%2.90%2.94%0.72%3.01%2.94%36.62%
20240.04%-0.13%5.71%-1.64%3.58%0.66%3.43%1.98%0.80%-1.95%-0.83%1.11%13.23%
20235.74%-0.76%0.37%2.30%-3.22%4.48%2.43%-1.89%-0.71%-2.24%5.54%5.22%18.01%
20220.25%-3.23%0.82%-4.59%3.38%-7.14%1.59%-3.23%-7.19%5.78%7.87%-1.31%-7.95%
20211.21%3.09%3.92%1.39%2.02%-0.45%-0.30%1.54%-1.82%3.61%-1.56%6.08%20.08%

Benchmark Metrics

Thornburg Investment Income Builder Fund has an annualized alpha of 4.42%, beta of 0.59, and R2 of 0.71 versus S&P 500 Index. Calculated based on daily prices since December 24, 2002.

  • This fund participates in less of S&P 500 Index's moves in both directions, but captures a larger share of gains (76.89%) than losses (68.02%) - typical of diversified or defensive assets.
  • This fund generated an annualized alpha of 4.42% versus S&P 500 Index - delivering returns beyond what market exposure alone would predict.
  • Beta of 0.59 indicates this fund moves significantly less than S&P 500 Index - a genuinely defensive profile with reduced participation in both market rallies and downturns.

Alpha
4.42%
Beta
0.59
0.71
Upside Capture
76.89%
Downside Capture
68.02%

Expense Ratio

TIBAX has a high expense ratio of 1.14%, indicating above-average management fees.


Return for Risk

Risk / Return Rank

TIBAX ranks 98 for risk / return — in the top 98% of mutual funds on our site. This means strong returns relative to risk — exactly what professional investors look for. Well-suited for investors who want to maximize return per unit of risk.


TIBAX Risk / Return Rank: 9898
Overall Rank
TIBAX Sharpe Ratio Rank: 9999
Sharpe Ratio Rank
TIBAX Sortino Ratio Rank: 9898
Sortino Ratio Rank
TIBAX Omega Ratio Rank: 9696
Omega Ratio Rank
TIBAX Calmar Ratio Rank: 9797
Calmar Ratio Rank
TIBAX Martin Ratio Rank: 9898
Martin Ratio Rank
The rank (0–100) shows how this investment's returns compare to the risk taken. Higher = better. Based on the past 12 months of data, combining Sharpe, Sortino, and other metrics used by quantitative funds and institutional investors.

Return / Risk — by metrics

The table below present risk-adjusted performance metrics for Thornburg Investment Income Builder Fund (TIBAX) and compare them to S&P 500 Index.

Values are calculated on a 1-year rolling basis and updated daily. Risk-adjusted metrics are more stable over longer periods — use the period switch above to explore them.


TIBAXBenchmarkDifference
Sharpe ratioReturn per unit of total volatility

+2.22

Sortino ratioReturn per unit of downside risk

+3.27

Omega ratioGain probability vs. loss probability

1.84

1.37

+0.48

Calmar ratioReturn relative to maximum drawdown

6.85

2.78

+4.06

Martin ratioReturn relative to average drawdown

26.19

12.44

+13.75

Dividends

Dividend History

Thornburg Investment Income Builder Fund provided a 4.93% dividend yield over the last twelve months, with an annual payout of $1.88 per share. The fund has been increasing its distributions for 2 consecutive years.


4.00%4.50%5.00%5.50%$0.00$0.50$1.00$1.50$2.0020152016201720182019202020212022202320242025
Dividends
Dividend Yield
PeriodTTM20252024202320222021202020192018201720162015
Dividend$1.88$1.86$1.39$1.12$1.19$1.25$0.88$0.96$0.90$0.93$0.77$0.82

Dividend yield

4.93%5.64%5.44%4.67%5.62%5.10%4.11%4.23%4.49%4.22%3.83%4.31%

Monthly Dividends

The table displays the monthly dividend distributions for Thornburg Investment Income Builder Fund. The dividends shown in the table have been adjusted to account for any splits that may have occurred.


JanFebMarAprMayJunJulAugSepOctNovDecTotal
2026$0.00$0.00$0.24$0.00$0.00$0.27$0.51
2025$0.00$0.00$0.23$0.00$0.00$0.26$0.00$0.00$0.32$0.00$0.66$0.40$1.86
2024$0.00$0.00$0.23$0.00$0.00$0.26$0.00$0.00$0.29$0.00$0.22$0.40$1.39
2023$0.00$0.00$0.21$0.00$0.00$0.25$0.00$0.00$0.29$0.00$0.00$0.37$1.12
2022$0.00$0.00$0.20$0.07$0.00$0.25$0.00$0.00$0.29$0.00$0.00$0.39$1.19
2021$0.00$0.00$0.23$0.00$0.00$0.28$0.00$0.00$0.31$0.00$0.00$0.44$1.25

Drawdowns

Drawdowns Chart

The Drawdowns chart displays portfolio losses from any high point along the way. Drawdowns are calculated considering price movements and all distributions paid, if any.


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Worst Drawdowns

The table below displays the maximum drawdowns of the Thornburg Investment Income Builder Fund. A maximum drawdown is a measure of risk, indicating the largest reduction in portfolio value due to a series of losing trades.

The maximum drawdown for the Thornburg Investment Income Builder Fund was 49.12%, occurring on Mar 9, 2009. Recovery took 525 trading sessions.

The current Thornburg Investment Income Builder Fund drawdown is 0.30%.


Related event

Drawdown

Fall

Recovery

Underwater

Financial crisis2007–2009
-49.12%Mar 2009
1y 4mo2y 28d
3y 5moNov 2007 - Apr 2011
COVID crash2020
-34.85%Mar 2020
2mo 2d9mo 19d
11mo 21dJan 2020 - Jan 2021
Bear market2022
-20.94%Oct 2022
8mo 4d11mo 7d
1y 7moFeb 2022 - Sep 2023
2016 bear market2016
-20.72%Feb 2016
9mo 19d1y 2mo
1y 12moApr 2015 - Apr 2017
2011 correction2011
-15.17%Nov 2011
6mo 27d10mo 4d
1y 4moMay 2011 - Sep 2012

Drawdown Indicators


TIBAXBenchmarkDifference

Max Drawdown

Largest peak-to-trough decline

-49.12%

-56.78%

+7.66%

Max Drawdown (1Y)

Largest decline over 1 year

-5.43%

-9.10%

+3.67%

Max Drawdown (3Y)

Largest decline over 3 years

-9.20%

-18.90%

+9.70%

Max Drawdown (5Y)

Largest decline over 5 years

-20.94%

-25.43%

+4.49%

Max Drawdown (10Y)

Largest decline over 10 years

-34.85%

-33.92%

-0.93%

Current Drawdown

Current decline from peak

-0.30%

-1.80%

+1.50%

Average Drawdown

Average peak-to-trough decline

-5.98%

-10.71%

+4.73%

Ulcer Index

Depth and duration of drawdowns from previous peaks

1.42%

2.03%

-0.61%

Volatility

Volatility Chart

The chart below shows the rolling one-month volatility.


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Portfolio Analyzer

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