NEW YORK (TheStreet) -- Get in on the ground floor of a hot IPO, make a killing. Buy during the excitement on opening day for a company that ends up going south, get killed yourself. 

Take the case of fast-casual burger chain Shake Shack(SHAK) - Get Report , which went public last week. Shares are down nearly 20% after its first week of trading from its high of $52.50 on IPO day. So is the stock still a buy for investors? Only time will tell.

For now, we can only look back to last year's IPO flops to learn what lessons we can. TheStreet analyzed how much retail investors would have lost if they had invested in some of the worst performing IPOs of the year. With the help of data provided by Dealogic, we took the top 20 worst-performing IPOs (as per their offer price compared to recent trading) and calculated the stocks' performances based on first-day trading high to current price (closing prices as of Feb. 5, 2015).

Of note, molecular diagnostics companies seem to dominate the list but there are plenty of sectors and industries represented.

Here's the 13 worst performing stocks on the list. And don't forget to check out the top IPO companies you wish you had owned in 2014.

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REPH

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13. Recro Pharma (REPH) - Get Report
IPO Date: March 6, 2014
Deal Value: $34.5 million
Offering Price: $8
Opening day high: $8.95
Price as of Feb. 5: $3.32

Recro Pharma is a clinical stage specialty pharmaceutical company developing non-opioid therapeutics for the treatment of pain. Shares of Recro Pharma are down 63% since its first-trading day high of $8.95.

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ROKA

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12. Roka Bioscience (ROKA)
IPO Date: July 16, 2014
Deal Value: $60 million
Offering Price: $12
Opening day high: $12.05
Price as of Feb. 5: $4.44

Roka Bioscience is a molecular diagnostics company that provides advanced testing solutions for food safety market - for the detection of foodborne bacteria. Shares are down 63% from its first-day trading high of $12.05.

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FMSA

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11. FMSA Holdings (FMSA)
IPO Date: Oct. 2, 2014
Deal Value: $400 million
Offering Price: $16
Opening day high: $16.98
Price as of Feb. 5: $6.13

FMSA Holdings, the holding company for Fairmount Santrol, a provider of high-performance sand and sand-based products used by oil and gas exploration and production companies to enhance the productivity of their wells. Shares are down 64% from their first-day trading high of $16.98.

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CRCM

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10. Care.com (CRCM) - Get Report
IPO Date: Jan. 23, 2014
Deal Value: $105 million
Offering Price: $17
Opening day high: $24.40
Price as of Feb. 5: $8.18

Care.com is an online marketplace for finding and managing family care spanning child care to senior care, pet care and housekeeping. The company says it has 13.3 million consumer members across 16 countries. Shares of Care.com are down 66% since its first-day trading high of $24.40.

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ATEN

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9. A10 Networks (ATEN) - Get Report
IPO Date: March 20, 2014
Deal Value: $193 million
Offering Price: $15
Opening day high: $16.50
Price as of Feb. 5: $4.77

A10 Networks provides advanced application networking technologies, which allows businesses, service providers, Web giants and government organizations to secure and optimize the performance of their data center applications and networks. A10 Networks to offer additional products to solve a growing array of networking and security challenges arising from increased Internet cloud and mobile computing. Shares are down 71% from its first-day trading high of $16.50.

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BRDR

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8. Borderfree (BRDR)
IPO Date: March 20, 2014
Deal Value: $92 million
Offering Price: $16
Opening day high: $21.25
Price as of Feb. 5: $6.05

Borderfree provides international cross-border e-commerce platform for online retailers to transact with customers in more than 100 countries and more than 60 currencies. Shares are down 72% from its first-day trading high of $21.25.

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ECR

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7. Eclipse Resources (ECR) - Get Report
IPO Date: June 19, 2014
Deal Value: $818 million
Offering Price: $27
Opening day high: $27.18
Price as of Feb. 5: $7.19

Eclipse Resources is an oil and gas exploration and production company engaged in the acquisition and development of oil and natural gas properties in the Appalachian Basin. Shares are down 74% from its first-day trading high of $27.18.

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HELI

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6. CHC Group (HELI)
IPO Date: Jan. 16, 2014
Deal Value: $310 million
Offering Price: $10
Opening day high: $9.87
Price as of Feb. 5: $2.15

CHC Group is the parent company of CHC Helicopter, the Canadian helicopter transportation services company. Among the company's services are: offshore transportation to the oil-and-gas rigs, flying for search-and-rescue and emergency medical missions, and delivering maintenance, repair and support services. Shares of CHC are down 78% from its first-day trading high of $9.87.



MOLG data by YCharts

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5. MOL Global (MOLG)
IPO Date: Oct. 8, 2014
Deal Value: $169 million
Offering Price: $12.50
Opening day high: $11.14
Price as of Feb. 5: $2.33

MOL Global is an online payments company based in Malaysia. It is the first Malaysian company to list shares in the U.S. After a lackluster debut in October, the company postponed its third-quarter earnings report the following month - at the same time its CFO resigned for "personal reasons". MOL Global, which goes by Money Online, is owned by billionaire Vincent Tan. Shares of MOL Global are down 79% since its first-date trading high of $11.14.

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GBSN

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4. Great Basin Scientific (GBSN)
IPO Date: Oct. 9, 2014
Deal Value: $8 million
Offering Price: $7
Opening day high: $9.08
Price as of Feb. 5: $1.84

Great Basin Scientific is a molecular diagnostics company that sells breakthrough chip-based technologies to help diagnose infectious diseases faster. Shares are down 80% since its first-day trading high of $9.08.

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SGNL

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3. Signal Genetics (SGNL)
IPO Date: June 17, 2014
Deal Value: $8.5 million
Offering Price: $10
Opening day high: $9.99
Price as of Feb. 5: $2

Signal Genetics is a molecular diagnostic company specifically focused on cancer-related diagnoses. Shares are down 80% since its first-trading high of $9.99.

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BIOC

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2. Biocept (BIOC) - Get Report
IPO Date: Feb. 4, 2014
Deal Value: $19 million
Offering Price: $10
Opening day high: $10.02
Price as of Feb. 5: $1.76

Biocept is a molecular diagnostics company specializing in oncology tests, specifically for Circulating Tumor Cells (CTCs) and biomarker analysis. Shares are down 82% since its first-day trading high of $10.02.

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AMDA

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1. Amedica Corp. (AMDA)
IPO Date: Feb. 3, 2014
Deal Value: $20.1 million
Offering Price: $5.75
Opening day high: $6.50
Price as of Feb. 5: 65 cents

Amedica develops medical-grade silicon nitride ceramic implants for the use in spinal conditions and debilitating diseases. The Salt Lake City-based company is in the process of developing wear-and corrosion-resistant implant components for hip and knee arthroplasty. Shares of Amedica are down 90% since its first-trading day high of $6.50.

-- Written by Laurie Kulikowski in New York.

Follow @LKulikowski