Investors have not been overlooking investing and trading opportunities in the exchange-traded funds that represent Treasury bonds, gold bullion, utility stocks and junk bonds.

The best investment in the 30-year U.S. Treasury bond yield is the 20+ Year Treasury Bond ETF(TLT) - Get Report . Gold bullion investors use the SPDR Gold Shares ETF (GLD) - Get Report . Investors seeking dividends buy the Utilities Select Sector SPDR Fund (XLU) - Get Report . Investors in high-yielding bonds buy the SPDR Barclays High Yield Bond ETF (JNK) - Get Report . Here's how the underlying investments are performing now.

The yield on the 30-year U.S. bond rose following the election and peaked at 3.215% on Dec. 12. Since then, this yield has declined to 2.902% on Jan. 12, establishing a trading range. My weekly and semiannual value levels are 3.109%, 3.302% and 3.467% with an annual value level of 4.137%. My quarterly and monthly risky levels are 2.790% and 2.536%, respectively, with an annual risky level of 2.276%.

Comex gold futures traded as low as $1,124.3 the Troy ounce on Dec. 15, then rebounded to as high as $1,218.0 on Tuesday, establishing a trading range. This high is above my quarterly and monthly pivots at $1,196.0 and 1,212.4, respectively. My weekly and semiannual value levels are $1,128.1, $918.7 and $727.5, with annual risky levels at $1,660.1 and $1,674.1.

The Dow utility average bottomed at 616.19 on Nov. 14, then rebounded to as high as 665.93 on Dec. 14. My quarterly pivot is 640.73, with weekly and annual pivots of 677.45 and 679.56, respectively, and a semiannual risky level of 732.33.

The "flight to safety" investments ended last week with the U.S. Treasury bond and gold ETFs up 1.8% and 4.2% year to date, respectively, vs. 1.5% and 2%, respectively, on Jan. 6. The utility stocks ETF lagged, slipping by 0.1% year to date vs. a rise of 0.5% on Jan. 6.

By comparison, the S&P 500 SPDR ETF (SPY) - Get Report has a gain 1.6% year to date.

Here's how to trade the exchange-traded funds.

Investors can trade the U.S. Treasury 30-year bond like a stock using the 20+ Year Treasury Bond ETF, which is backed by a basket of U.S. Treasury bonds with maturities of 20 years to 30 years. As a stock-type investment it never matures and interest income is converted to periodic dividend payments.

Here's the weekly chart for the bond ETF.

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Courtesy of MetaStock Xenith

The weekly chart has been upgraded to neutral, with the bond ETF above its key weekly moving average of $121.26 and above its 200-week simple moving average of $120.24, which is the "reversion to the mean." The weekly momentum reading inched higher last week to 12.93, up from 8.65 on Jan. 6, with both readings below the oversold threshold of 20.00.

Investors looking to buy the bond ETF should consider buying weakness to $116.81, $115.92 and $105.77, which are key levels on technical charts until the end of this week, until the end of June and until the end of 2017, respectively. Investors looking to reduce holdings should do so on strength to $126.87, which is a key level until the end of March.

Investors can trade gold like a stock using the SPDR Gold Shares ETF, which is backed by gold bullion. Here's the weekly chart for the Gold ETF.

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Courtesy of MetaStock Xenith

The weekly chart has been upgraded to neutral, with the gold bullion ETF above its key weekly moving average of $112.73 and below its 200-week simple moving average of $120.06, last tested as the "reversion to the mean" during the week of the election, when the average was $122.02. The weekly momentum reading rose to 15.81 last week, up from 10.04 on Jan. 6, with both readings below the oversold threshold of 20.00.

Investors looking to buy the gold ETF should consider buying weakness to $107.00, which is the Dec. 15 low. I show quarterly and monthly pivots at $113.82 and $115.20, respectively, with last week's high of $114.93 in between them. Investors looking to reduce holdings should do so on strength to $160.24, which is a key level on technical charts for all of 2017.

Investors seeking the safety of dividends can trade the utilities ETF, a basket of 28 utility stocks. Here's the weekly chart for the utilities ETF.

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Courtesy of MetaStock Xenith

The weekly chart remains positive, with the utilities ETF above its key weekly moving average of $48.26 and above its 200-week simple moving average as support at $43.70. The weekly momentum reading rose to 63.64 last week, up from 57.78 on Jan. 6.

Investors looking to buy the utilities ETF should do so on weakness to $46.26, which is a key level on technical charts until the end of March. Investors looking to reduce holdings should consider selling strength to $50.53 and $50.72, which are key levels on technical charts until the end of January and the end of 2017, respectively. A semiannual risky level is $54.29.

The SPDR Barclays High Yield Bond ETF is for investors betting that junk bond yields will tighten against U.S. Treasury securities. Remember that the performance of junk bonds correlates more to the stock market, not to the bond market, hence the recent tightening of spreads. Be careful as junk bonds are trying to stabilize within a junk bond bubble.

The recent high of $36.86 lines up with the Oct. 24 high of $36.91 as a key chart horizontal resistance.

Here's the weekly chart for the junk bond ETF.

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Courtesy of MetaStock Xenith

The weekly chart remains positive, with the junk bond ETF above its key weekly moving average of $36.46. As a sign of a continuing junk bond bubble, the ETF remains well below its 200-week simple moving average of $38.38. This ETF has been below this "reversion to the mean" since the week of Nov. 14, 2014, when the average was $40.08. The weekly momentum reading rose to 76.83 last week, up from 72.06 on Jan. 6.

Investors looking to buy the junk bond ETF should do so on weakness to $35.14 and $34.01, which are key levels on technical charts until the end of June and the end of March, respectively. Investors looking to reduce holdings should do so on strength to $37.04 and $37.55, which are key levels on technical charts until the end of January and until the end of this week, respectively. My annual value level is $27.60, with an annual risky level of $43.98.

This article is commentary by an independent contributor. At the time of publication, the author held no positions in the stocks mentioned.