diff --git a/Dockerfile b/Dockerfile
index 252f0f1..2ff293a 100644
--- a/Dockerfile
+++ b/Dockerfile
@@ -28,7 +28,7 @@ RUN curl https://pyenv.run | bash
 ENV PYENV_ROOT="$HOME/.pyenv"
 ENV PATH="$PYENV_ROOT/bin:$PYENV_ROOT/shims/:$PATH"
 ADD .python-version .
-RUN CONFIGURE_OPTS=--enable-shared pyenv install
+RUN CONFIGURE_OPTS="--enable-shared --fno-semantic-interposition --enable-optimizations --with-lto --with-pgo" pyenv install
 ADD requirements.txt .
 RUN pip install -r requirements.txt
 ADD app.py .
diff --git a/app.py b/app.py
index eaf5f7c..61d2811 100644
--- a/app.py
+++ b/app.py
@@ -690,12 +690,12 @@ def backtest_logfile(self, price_log: str) -> None:
                         continue
 
                     parts = line.split(" ")
-                    date = " ".join(parts[0:2])
                     symbol = parts[2]
-                    market_price = float(parts[3])
-
                     if symbol not in self.tickers:
                         continue
+                    date = " ".join(parts[0:2])
+                    market_price = float(parts[3])
+
 
                     # implements a PAUSE_FOR pause while reading from
                     # our price logs.
diff --git a/requirements-dev.txt b/requirements-dev.txt
index 2d1a6de..142c4f2 100644
--- a/requirements-dev.txt
+++ b/requirements-dev.txt
@@ -24,4 +24,4 @@ tomli==1.2.2
 tornado==6.1
 typing-extensions==3.10.0.2
 urllib3-mock==0.3.3
-types-PyYAML==-6.0.0
+types-PyYAML==6.0.0