Possible Accumulation Day Indicator for ThinkorSwim


Staff member
Knowing the accumulation and distribution levels can help to measures supply and demand of the stock. When looking at whether a stock is being accumulated or distributed, we use volume and where price closed within the period's range.

The author noted that ThinkorSwim "doesn't have COMP volume" so take that into consideration.


thinkScript Code
Rich (BB code):
# Copyright 2017 Scott J. Johnson (http://scottjjohnson.com)
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#      http://www.apache.org/licenses/LICENSE-2.0
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS-IS" BASIS,
# See the License for the specific language governing permissions and
# limitations under the License.

# PossibleAccumulationDayIndicator
# Adds an indicator on the chart when the price gain is greater than the 
# minimum necessary for an Accumulation Day per Market School rules. This
# is a "possible" AD because Market School also requires volume to be greater
# than the prior day, but TOS doesn't have COMP volume so that portion of the
# rule must be applied manually.
#declare upper;
input Period = 200;

def Up = If(close > close[1], (close - close[1])/close*100, 0);
def Count = If(close > close[1], 1, 0);

def UpTotalGain = Sum(Up, Period);
def UpTotalDays = Sum(Count, Period);
def AvgGainPct = UpTotalGain/UpTotalDays;

def AccumulationDayMinPctGain;

if (AvgGainPct < 0.4) {
    AccumulationDayMinPctGain = 0.7;
} else if (AvgGainPct >= 0.4 and AvgGainPct < 0.55) {
    AccumulationDayMinPctGain = 0.85;
} else if (AvgGainPct >= 0.55 and AvgGainPct < 1.0) {
    AccumulationDayMinPctGain = 1.0;
} else if (AvgGainPct >= 1.0) {
    AccumulationDayMinPctGain = 1.245;
} else {
    AccumulationDayMinPctGain = Double.NAN;

plot AccumulationDay = (Up >= AccumulationDayMinPctGain);

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