Hi Tim,

2 years ago I tried to get historical STEEM 2 MVEST Ratios, based on Powerdowns.

First withdraw from vesting happend in block 908456

https://steemd.com/b/908456

If you look into the table below, STEEM/MVEST changed from 63.4 to 120.0 within one month.

DATE;BLOCK;STEEM;VEST;STEEMperMVEST
2016-04-25;908456;744.152;11736661.692307;63.40405981777319
2016-04-26;920013;61.697;961538.461538;64.1648800000308
2016-04-27;964928;64538.157;961538461.538461;67.11968328000003
2016-04-28;982376;700.843;10266063.0;68.267942637796
2016-04-29;1013871;536.675;7629863.730769;70.33873984351087
2016-04-30;1028641;758.689;10639479.115384;71.3088480904093
2016-05-01;1052603;509.426;6989765.990384;72.88169599680882
2016-05-02;1104641;895.42;11736661.692307;76.29256286622956
2016-05-03;1125754;304.721;3923049.330621;77.67452670592958
2016-05-04;1165656;77195.818;961538461.538461;80.28365072000005
2016-05-05;1186597;4660.456;57075343.788461;81.65445340588927
2016-05-06;1197028;1583.402;19230769.230769;82.33690400000098
2016-05-07;1229614;898.68;10639479.115384;84.46654110167543
2016-05-08;1253679;601.381;6989765.990384;86.03735816439853
2016-05-09;1298213;349.401;3928469.875;88.94073548164856
2016-05-10;1326805;356.223;3923049.330621;90.80257982471295
2016-05-11;1343340;7218.64;78567307.692307;91.87841879818953
2016-05-12;1387701;5408.562;57075343.788461;94.76179451578628
2016-05-13;1398159;5485.254;57472686.0;95.44105873179478
2016-05-14;1439857;1376.293;14022648.451923;98.14786448641674
2016-05-15;1454843;714.19;7205310.995338;99.11994089666597
2016-05-16;1499236;400.695;3928469.875;101.99772755034809
2016-05-17;1527613;407.352;3923049.330621;103.83555384339715
2016-05-18;1544158;8242.235;78567307.692307;104.90667482560369
2016-05-19;1588551;6151.496;57075343.788461;107.77851856310075
2016-05-20;1599013;6233.196;57472686.0;108.45492761552853
2016-05-21;1640914;1558.792;14022648.451923;111.1624530376239
2016-05-22;1655916;807.941;7205310.995338;112.1313154314583
2016-05-23;1700278;451.748;3928469.875;114.99337257868115
2016-05-24;1729079;573.507;4908082.278846;116.84950810051299
2016-05-25;1745453;9263.447;78567307.692307;117.90460017133871
2016-05-26;1789835;6892.533;57075343.788461;120.76200584171467

I assume that in the first month (from 31th of March till 25th of April) this ratio has changed dramatically. So the first PowerUp of 8071 STEEM to ben has transformed into a huge VEST stake https://steemd.com/tx/9d83a22907ea6a58c887ac4e15173e6363ee9d7b

I think one should make a replay of the chain and print out the steem/vest ratio for each block, than we will know more.