NEW YORK (TheStreet) -- Investors are no longer seeing the world through rose-colored 3D glasses. Three-dimensional printing company 3D Systems  (DDD - Get Report) was among the hardest hit technology stocks on Thursday. Shares fell nearly 11% and sentiment on swung to bearish, with 53% of investors on the site calling for more losses.

Some investors said that the chart indicated 3D Systems could continue to fall as low as $37 per share. The stock closed at $48.78 yesterday.

$DDD completion of a H&S would be at $37 area I think.

-- AA (@CaptureTheBullFlag) Apr. 10 at 03:17 PM

3D suffers from a broad problem impacting all disruptive technology stocks: investors no longer believe that the growth story was much more than hype.

Remember how hot 3D printing is? I mean was... so last year $DDD stock price 1/2 in 4 months

-- blackmarkt (@blackmarkt) Apr. 10 at 01:43 PM

3D Systems and competing three-dimensional printing companies such as Stratasys  (SSYS - Get Report) and Voxeljet  (VJET - Get Report) promise to revolutionize manufacturing with the ability to print everything from car parts and shoes to concrete houses. Some companies even envision a future where consumers print their own toys and clothes at the click of a button.

But investors now doubt that businesses will adopt new manufacturing methods given the weaker global economy. And that means profit multiples like 3D's 40 times forward 2015 earnings aren't likely justified. Voxeljet shares fell 13% Thursday. Stratasys dropped nearly 7%.

China compounded concerns of a tepid U.S. recovery with Thursday's trade data that showed March exports in the world's second-largest economy fell 6.6% from the same period a year ago. The data also cast doubt on last year's reports, which many economists now say were likely inflated.

Some investors wonder whether the chocolate companies, shoe manufacturers and parts suppliers who use 3D printers just got caught up in the hoopla, rather than ever saw real value in the machines.

$DDD where are the analysts defending their upgrades at 90 a share? I thought this was due for a sell off but this is sick. Fad?

-- Krull (@Hitthebidradio) Apr. 10 at 06:33 PM

Of course, the price action hasn't turned everyone into a bear. Some investors said that 3D printing is the future, investors just need to hold through the ups and downs to get there.

$DDD Oversold imo! from

-- Carol Chen, CFA (@ccpmispy) Apr. 10 at 08:04 PM

$DDD Irrational negativity--it's getting ugly all up in here. Flush, then steady build prior to earnings is my guess...

-- kat douglas (@y2kate) Apr. 10 at 06:33 PM

But most investors see too much pain ahead to warrant holding shares.

$YOD $KNDI $DDD- BIO-TECH, MARKET ETC ETC ETC. ANOTHER MASSACRE TOMORROW. When will this bleeding end? Who the hell knows.

-- Jennifer (@Bullsallday) Apr. 10 at 10:23 PM

At the time of publication the author held no positions in any of the stocks mentioned.

This article represents the opinion of a contributor and not necessarily that of TheStreet or its editorial staff.