The yield of the U.S. Treasury 30-year bond declined to a new 2016 low of 2.513% early Tuesday, approaching its record low of 2.221% set on Jan. 20, 2015. Lower yields reflect a "flight to safety" at a time of high volatility in the stock market.

The exchange-traded fund that tracks this bond like a stock is the 20+ Year Treasury Bond ETF (TLT) , a basket of U.S. Treasury bonds with maturities of 20 to 30 years.

Comex gold set a new 2016 high of $1,201.4 per Troy ounce on Monday, again on the "flight to safety," which has gained momentum as stock turmoil continues. The ETF to trade as a proxy for gold is the SPDR Gold Shares ETF (GLD) , which is backed by gold bullion.

Nymex crude oil has been stabilizing since trading as low as $27.56 a barrel on Jan. 20. My key level on technical charts of $29.90 has been crossed as a magnet several times since then. This level will be in play until the end of March. You can trade oil like a stock using iShares GSCI Commodity-Index Trust Fund (GSG) , which is 70% to 75% weighed to energy and crude oil.

The best ETF that tracks the ups and downs of the dollar is the Deutsche Bank USD Index (UUP) , which is basket of currencies including the euro, Japanese yen, British pound, Canadian dollar, Swedish krona and Swiss franc.

Here's the weekly chart for the bond ETF.


Courtesy of MetaStock Xenith

The bond ETF closed at $131.49 on Monday, up 9% year to date versus a decline of 9.3% for the S&P 500 .

The weekly chart for the bond ETF is positive but overbought, with the ETF above its key weekly moving average of $126.31 and well above its 200-week simple moving average of $118.20. The weekly momentum reading is projected to rise to 83.19 this week up from 77.81 on Feb. 5 moving above the overbought threshold of 80.00.

Investors looking to buy the bond ETF should enter a good till canceled limit order to buy this ETF if it declines to $126.20, which is a key level on technical charts until the end of this week. Investors looking to reduce holdings should enter a GTC limit order to sell this ETF if it rises to $132.45, which is a key level on technical charts until the end of 2016.

Here's the weekly chart for the gold exchange-traded fund.


Courtesy of MetaStock Xenith

The gold ETF closed at $113.83 on Monday, up 12.2% year to date versus a decline of 9.3% for the S&P 500.

The weekly chart for the gold ETF is positive, with the ETF above its key weekly moving average of $107.78 and the 200-week simple moving average at an upside target of $129.69. The weekly momentum reading is projected to rise to 56.03 up from 52.39 on Feb. 5.

Investors looking to buy the gold EFT should enter a good till canceled limit order to buy this ETF if it declines to $108.65, which is a key level on technical charts until the end of this week. Investors looking to reduce holdings should enter a GTC limit order to sell this ETF if it rises to $129.69, which is the 200-week simple moving average. A key level of $109.94 remains in play until the end of March.

Here's the weekly chart for the commodity index ETF.


Courtesy of MetaStock Xenith

The commodities ETF closed at $12.80 on Monday, down 10% year to date but 6.4% above its Jan. 20 low of $12.03.

The weekly chart for the commodity ETF remains negative but oversold, with the ETF below its key weekly moving average of $13.54 and well below its 200-week simple moving average of $27.80. The weekly momentum reading is projected to rise to 18.52 this week up from 15.19 on Feb. 5, with both readings well below the oversold threshold of 20.00.

Investors looking to buy the commodities ETF should enter a good till canceled limit order to buy the ETF if it drops to $12.57 and $11.78, which are key levels on technical charts until the end of this week and to the end of February, respectively. Investors looking to reduce holdings should enter a GTC limit order to sell this ETF if it rises to $18.42, which is a key level on technical charts until the end of June. A key level of $13.19 will be in play until the end of March.

Here's the weekly chart for the dollar index ETF.


Courtesy of MetaStock Xenith

The dollar ETF closed at $25.86 on Monday, down 2.1% year to date and up 3.8% from its low of $24.20 set on Aug. 24.

The weekly chart for the dollar ETF is negative, with the ETF below its key weekly moving average of $25.49 and well above its 200-week simple moving average of $23.05. The weekly momentum reading is projected to decline to 50.38 this week down from 60.43 on Feb. 5.

Investors looking to buy the dollar ETF should enter a good till canceled limit order to buy this ETF if it declines to $24.18 and $23.31, which are key levels on technical charts until the end of June and the end of 2016, respectively. Investors looking to reduce holdings should enter a GTC limit order to sell this ETF if it rises to $26.68, which is a key level on technical charts until the end of March. A key level of $25.50 will be in play until the end of February.

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

If you liked this article you might like

Why I Bought Gold (and Think It Could Hit a Record High in 2018)

Why I Bought Gold (and Think It Could Hit a Record High in 2018)

Time to Play Gold -- But Not the Way You're Thinking

Time to Play Gold -- But Not the Way You're Thinking

How to Tackle Investing: Cramer's 'Mad Money' Recap (Wednesday 2/14/18)

How to Tackle Investing: Cramer's 'Mad Money' Recap (Wednesday 2/14/18)

Bridgewater's Ray Dalio Gets More Bullish on Gold Amid Warnings of Recession

Bridgewater's Ray Dalio Gets More Bullish on Gold Amid Warnings of Recession

Seeing Good Action in Several Stocks, Buying More MJ, Gold

Seeing Good Action in Several Stocks, Buying More MJ, Gold