*************************************************************************************************** Doit3: starting new run If bankrupt, interpreting as before reported date No stocks. gamma is mean. merging all rounds together All industries together Using round to round returns. Only last round gets ipo return Doing model with k, bankruptcy minage parameter 0.25 using all rounds, even those that take less than 60 days keeping all returns, even 4 huge There are data points in this estimation before cleaning = 16852.00 elminated observations with unknown fate: 0 Eliminated observations with >100% or <0% shareholder value 99.00 Eliminated observations with missing round date 0 Note. Beta procedure -- cannot handle missing round date, so eliminating those. Eliminating observations that start in second quarter 2000. Need one quarter lag for probability. 107.00 If out date is before or equal to begin date, treat out date as missing. This affects 39.00 Relabeling all ipo, acquisition or new round with zero return as out of business. This affects 15.00 deleting observations with log annualized return greater than 15 12.00 Remaining data: 16634.00 Note: following refers to round, not company. Round may end in another round, though company eventually goes public Percent bankrupt 4.25 Percent ipo 7.86 Percent acquired 9.20 Percent with subsequent round 54.17 Percent Private 23.31 Percent Ipo registered 1.21 Percent fate unknown 0 0 Percent of bankrupt have good data. Using this parameter in simulation Note: good means round date and exit date not -99 93.07 Percent of new valuation (ipo,acquired,new round) that have good data. Using this parameter in simulation. Note: good means final date not -99, return not missing or 0 50.99 findlk3 WARNING: lnV is past grid. Make grid bigger. i x 6340.00 7456.00 2.00 8.00 19950407.00 1.00 3.00 19960412.00 1.00 4144.00 1368.38 0 0 0 Directional Iteration Func-count f(x) Step-size derivative 1 5 72670.5 0.001 -2.99e+008 2 14 72670.5 1e-011 -2.99e+008 3 23 70998.6 4.10921e-006 -2.96e+005 4 33 69186.9 5.07066e-005 -6.66e+005 5 42 68295 5.27559e-005 -2.02e+005 6 52 68269.9 0.00157168 -374 7 62 68252.8 0.756475 -0.218 8 71 68251.7 0.526086 0.00355 Optimization terminated successfully: Current search direction is a descent direction, and magnitude of directional derivative in search direction less than 2*options.TolFun initial and final parameters 0.01 0 0.90 0.10 1.00 3.00 0 0.06 NaN 0.51 0.17 0.65 3.23 NaN chi2 tests. NOTE NO MINIMIZATION OVER OTHER PARAMETERS YET test for gamma = 0, and all other parameters unchanged. chi2 value, chi2(1) and chi2(#pars) 694.83 3.84 11.07 looking for most influential observations 30 most influential observations and their contrib to lkly co. no. round date post value exit date exit typ post value gross ret age(mo) lkly contrib 3365.00 19990301.00 63.00 19990929.00 1.00 2100.80 29.97 6.92 14.75 5189.00 19930602.00 11.50 19940217.00 6.00 1.60 0.04 8.49 15.01 3536.00 19960805.00 32.80 19990624.00 1.00 9637.60 291.01 34.62 15.12 1985.00 19990322.00 140.00 19990629.00 1.00 86.20 0.12 3.23 15.49 4639.00 19921221.00 9.60 19940115.00 6.00 1.00 0.03 12.80 15.66 3859.00 19990115.00 43.55 19990721.00 1.00 1914.60 37.31 6.20 15.99 635.00 19891101.00 37.00 19930330.00 6.00 2.40 0.02 40.95 16.03 998.00 19900101.00 28.30 19971107.00 1.00 24.80 0.05 94.20 16.23 2773.00 19950817.00 16.50 19990607.00 2.00 0.41 0.02 45.67 16.31 4471.00 19981201.00 5.05 19990215.00 6.00 81.00 13.76 2.46 16.38 1531.00 19990401.00 212.00 19990701.00 1.00 3034.10 13.94 3.00 16.38 3623.00 19870601.00 46.20 19890901.00 6.00 5.00 0.02 27.00 16.49 1145.00 19951222.00 31.60 19980914.00 2.00 0.62 0.02 32.74 16.65 1765.00 19970531.00 108.00 19980626.00 1.00 104.00 0.03 12.84 16.86 4906.00 19900329.00 15.00 19910630.00 6.00 1.00 0.02 15.03 17.11 6533.00 19990917.00 120.00 20000201.00 1.00 82.90 0.04 4.47 18.21 3359.00 19940916.00 0.15 19941201.00 6.00 8.80 16.00 2.51 18.30 4636.00 19990219.00 159.00 19990505.00 1.00 2970.20 16.08 2.54 18.30 1313.00 19990501.00 122.00 19991101.00 2.00 6900.00 56.56 6.00 18.72 2394.00 19971212.00 117.00 19980318.00 1.00 2160.30 17.80 3.20 19.32 1865.00 19940815.00 34.00 19950901.00 6.00 2.00 0.01 12.54 19.63 3320.00 19930501.00 11.00 19950505.00 6.00 1.60 0.01 24.13 20.39 5762.00 19991005.00 38.00 20000306.00 2.00 805.20 21.19 5.03 21.48 6905.00 19871101.00 8.00 19930801.00 6.00 0.41 0.01 69.00 21.70 6132.00 19990201.00 4.80 19990504.00 6.00 142.89 24.56 3.10 22.62 3780.00 19990301.00 10.00 19990630.00 6.00 300.00 26.50 3.95 23.79 3567.00 19940214.00 260.00 19990402.00 2.00 1.25 0.00 61.61 25.06 3966.00 19891024.00 10.00 19901001.00 1.00 22.80 0.00 11.24 28.16 7456.00 19950407.00 3.00 19960412.00 1.00 4144.00 1368.38 12.16 28.31 5488.00 19960116.00 28.80 19960627.00 1.00 1607.10 54.61 5.36 33.10 6787.00 19970627.00 40.20 19971007.00 1.00 38.20 0.01 3.34 35.35 Table . Maximum Likelyhood estimates A. Parameter Estimates and Standard Errors Parameter estimate std err mu % 22.26 0.93 sig % 102.88 0.92 k % 16.70 0.56 a 0.65 0.01 b 3.23 0.03 pim * 100 NaN NaN c 0.93 d 0.51 log likelyhood -68251.73 gamma and sigma are reported on an annualized basis - 4*gamma and 2*sigma. pim is times 100 Implied mean and sd of return levels 82.71 132.84 NOTE: Doit3 is incrementing tablerow