These 16 Louisiana Corps had their average stock prices increase by 117% from January 16, 2009 to August 26, 2013. This 117% increase is 1.2 times the 95% increase in the S&P 500 Index over the same time span.
This 117% increase is particularly noteworthy since it was generated in the same period of the horrible BP Spill with its very damaging impact on the Louisiana economy. During this tough economic time, US Senator Mary Landrieu played an instrumental role in moderating the substantial economic turbulence to Louisiana's economy from the BP Spill.
Below here are the common stock market closing prices of each of these 16 Louisiana Corps at both the most recent date (August 26, 2013) and also at the date just before President Obama took office in his first term (Jan 16, 2009), as well as the percentage stock market price changes for this period of time:
| Market | Market | Percentage | ||
| Louisiana | Price | Price | Increase | |
| HQs | 8-26-13 | 1-16-09 | (Decrease) | |
| Louisiana Largest Corps | ||||
| Lamar Advertising | Baton Rouge | $43.70 | $11.81 | 270% |
| EPL Oil & Gas (1) | New Orleans | $31.95 | $8.97 | 256% |
| H&E Equipment Services | Baton Rouge | $23.81 | $6.98 | 241% |
| Pool | Covington | $53.83 | $16.11 | 234% |
| Hornbeck Offshore Services | Covington | $56.74 | $17.17 | 230% |
| Albemarle | Baton Rouge | $62.92 | $22.63 | 178% |
| Stone Energy | Lafayette | $27.95 | $10.31 | 171% |
| McMoRan Exploration (2) | New Orleans | $16.75 | $9.18 | 82% |
| Amerisafe | Deridder | $33.80 | $19.60 | 72% |
| Shaw Group (3) | Baton Rouge | $47.61 | $29.01 | 64% |
| Superior Energy Services | Harvey | $25.80 | $16.08 | 60% |
| Tidewater | New Orleans | $55.67 | $38.51 | 45% |
| Iberiabank | Lafayette | $54.84 | $40.79 | 34% |
| CenturyLink | Monroe | $33.14 | $27.16 | 22% |
| Petroquest Energy | Lafayette | $4.30 | $6.16 | -30% |
| Amedisys | Baton Rouge | $17.11 | $44.32 | -61% |
| Average Increase: All 16 Louisiana Largest Corps | 117% | |||
| Dow Industrials Index | 14,946.46 | 8,281.22 | 80% | |
| S&P 500 Index | 1,656.78 | 850.12 | 95% | |
| S&P Mid-Cap 400 Index | 1,217.83 | 516.75 | 136% | |
| S&P SmallCap 600 Index | 588.11 | 247.89 | 137% | |
(1) EPL Oil & Gas has just recently moved its HQs to Houston, but is keeping the bulk of its people in New Orleans.
(2) McMoran Exploration was acquired in June 2013 and its above most recent stock price is for its most recent closing price.
(3) Shaw Group was acquired in Feb 2013 and its above most recent stock price is for its most recent closing price.
