Five companies went public last week, with a mixed bag of results. The winner was ClearSign, which to date has returned 7% on offer price. Edgen Group was close behind with a 5.55% return.

IPOs-in-waiting
May promises to be a busy month for IPOs, with 15 already scheduled for the first 11 days. We list them here:

1. Supernus Pharmaceuticals at $5 per share, expected to trade May 1, 2012.
2. Carlyle Group at $23-$25 per share, expected to trade May 3, 2012.
3. EverBank Financial at $12-$14 per share, expected to trade May 3, 2012.
4. Pacific Coast Oil Trust at $19-$21 per share, expected to trade May 3, 2012.
5. PetroLogistics at $19-$21 per share, expected to trade May 3, 2012.
6. Tillys at $11.50-$13.50 per share, expected to trade May 4, 2012.
7. New Source Energy at $10-$12 per share, expected to trade May 7, 2012.
8. Community Choice Financial at $13-$15 per share, expected to trade May 8, 2012.
9. Rib-X Pharmaceuticals at $12-$14 per share, expected to trade May 9, 2012.
10. Audience at $14-$16 per share, expected to trade May 10, 2012.
11. LINC Logistics at $14-$16 per share, expected to trade May 10, 2012.
12. TIM W.E. SGPS at $5-$6 per share, expected to trade May 10, 2012.
13. WageWorks at $10-$12 per share, expected to trade May 10, 2012.
14. Edwards Group at $11-$13 per share, expected to trade May 11, 2012.
15. Loyalty Alliance Enterprise at $12-$14 per share, expected to trade May 11, 2012.

Business section: Investing ideas
Let's take a look at the 20 most recent IPOs and how they have fared. Current price: as of market close April 27, 2012. (Click here to access free, interactive tools to analyze these ideas.)

1. Acquity Group: Consumer services. Offer date: April 27, 2012. Offer price: $6. First-day close: $5.75. Current price: $5.75. Return: -4.16%.

2. Edgen Group: Industrials. Offer date: April 27, 2012. Offer price: $9. First-day close: $9.50. Current price: $9.50. Return: 5.55%.

3. Ares Commercial Real Estate: Financials. Offer date: April 26, 2012. Offer price: $18.50. First-day close: $18.00. Current price: $17.82. Return: -3.67%.

4. ClearSign: Industrials. Offer date: April 25, 2012. Offer price: $4. First-day close: $4.20. Current price: $4.28. Return: 7.0%.

5. Envivio: Technology. Offer date: April 25, 2012. Offer price: $9. First-day close: $8.49. Current price: $9.20. Return: 2.22%.

6. Infoblox (Nasdaq: BLOX): Technology. Offer date: April 20, 2012. Offer price: $16. First-day close: $21.30. Current price: $20.95. Return: 30.93%.

7. Midstates Petroleum: Oil and gas. Offer date: April 20, 2012. Offer price: $13. First-day close: $15.03. Current price: $15.82. Return: 21.69%.

8. Proofpoint: Technology. Offer date: April 20, 2012. Offer price: $13. First-day close: $14.08. Current price: $13.59. Return: 4.53%.

9. Splunk: Technology. Offer date: April 19, 2012. Offer price: $17. First-day close: $35.48. Current price: $35.06. Return: 106.23%.

10. Tumi Holdings: Consumer goods. Offer date: April 19, 2012. Offer price: $18. First-day close: $26.50. Current price: $26.57. Return: 47.61%.

11. SandRidge Mississippian Trust II: Oil and gas. Offer date: April 18, 2012. Offer price: $21. First-day close: $21.25. Current price: $23.72. Return: 12.95%.

12. Digital Cinema Destinations: Consumer services. Offer date: April 17, 2012. Offer price: $6.10. First-day close: $6.17. Current price: $7.38. Return: 20.983%.

13. Forum Energy Technologies (NYSE: FET): Industrials. Offer date: April 12, 2012. Offer price: $20. First-day close: $21.75. Current price: $22.35. Return: 11.75%.

14. MRC Global: Industrials. Offer date: April 12, 2012. Offer price: $21. First-day close: $21.04. Current price: $19.83. Return: -5.57%.

15. Oaktree Capital Group: Financials. Offer date: April 12, 2012. Offer price: $43. First-day close: $42.39. Current price: $39.80. Return: -7.44%.

16. Erickson Air-Crane: Basic materials. Offer date: April 11, 2012. Offer price: $8. First-day close: $8.00. Current price: $7.70. Return: -3.75%.

17. Retail Properties of America: Financials. Offer date: April 5, 2012. Offer price: $8. First-day close: $8.75. Current price: $9.08. Return: 13.5%.

18. Enphase Energy (Nasdaq: ENPH): Technology. Offer date: March 30, 2012. Offer price: $6. First-day close: $7.34. Current price: $6.75. Return: 12.5%.

19. GasLog (Nasdaq: GLOG): Consumer services. Offer date: 03/30, 2012. Offer price: $14. First-day close: $12.41. Current price: $11.74. Return: -16.14%.

20. CafePress (Nasdaq: PRSS): Consumer goods. Offer date: March 29, 2012. Offer price: $19. First-day close: $19.03. Current price: $16.84. Return: -11.37%.