Daily trading records

Westlake Chemical Partners Historical Stock Prices by Trading Day

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Review 60 recent trading days for Westlake Chemical Partners.

The verified trading-day record runs from June 25, 2026 through September 18, 2026.
Select a date to review its open, high, low, close, volume and change from the prior session.
Daily aggregate prices are provided by Polygon.

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Review Westlake Chemical Partners's price trend and period performance.

The chart connects verified session closes from June 24, 2026 through September 18, 2026.

Closing-price trend by trading session

Period performance is calculated from verified trading sessions.

5-session performance

-1.39%

From the September 11, 2026 close of $21.52 to $21.22 on September 18, 2026.

20-session performance

-1.44%

From the August 20, 2026 close of $21.53 to $21.22 on September 18, 2026.

60-session performance

-6.31%

From the June 24, 2026 close of $22.65 to $21.22 on September 18, 2026.

Westlake Chemical Partners Historical prices
Historical pricesOpenHighLowCloseVolumePrior-close change
$21.33$21.3606$21.22$21.2218,507-$0.11 (-0.52%)
$21.21$21.5099$21.21$21.3321,552+$0.05 (+0.23%)
$21.30$21.695$21.25$21.2822,538-$0.20 (-0.93%)
$21.545$21.63$21.3601$21.4827,225$0.00 (0.00%)
$21.47$21.929$21.31$21.4821,475-$0.04 (-0.19%)
$21.61$21.7173$21.4201$21.5210,665+$0.05 (+0.23%)
$21.75$21.85$21.44$21.4733,112-$0.20 (-0.92%)
$21.84$21.84$21.5193$21.675,193-$0.07 (-0.32%)
$21.80$21.90$21.675$21.7420,932-$0.14 (-0.64%)
$21.83$22.08$21.7001$21.8812,319-$0.05 (-0.23%)
$21.85$22.20$21.80$21.9348,343-$0.18 (-0.81%)
$21.74$22.30$21.74$22.1126,202+$0.38 (+1.75%)
$21.48$21.87$21.48$21.7311,595+$0.09 (+0.42%)
$21.64$21.7765$21.50$21.6421,384+$0.01 (+0.05%)
$21.95$21.99$21.52$21.6329,407-$0.10 (-0.46%)
$21.78$21.99$21.60$21.7330,550+$0.04 (+0.18%)
$21.74$21.86$21.4801$21.6929,024+$0.07 (+0.32%)
$21.6499$21.735$21.51$21.6215,934+$0.14 (+0.65%)
$21.57$21.74$21.3901$21.489,324-$0.08 (-0.37%)
$21.52$21.70$21.26$21.5628,059+$0.03 (+0.14%)
$21.5601$21.75$21.4001$21.5320,563-$0.19 (-0.87%)
$21.96$21.96$21.60$21.7254,086+$0.02 (+0.09%)
$21.52$21.79$21.52$21.7023,967+$0.04 (+0.18%)
$21.71$21.88$21.42$21.6627,789-$0.04 (-0.18%)
$21.54$21.75$21.54$21.7024,379+$0.03 (+0.14%)
$21.62$21.80$21.3292$21.6727,015-$0.39 (-1.77%)
$21.55$22.10$21.52$22.0669,891+$0.49 (+2.27%)
$21.68$21.84$21.49$21.5722,385-$0.11 (-0.51%)
$21.79$21.8801$21.56$21.6830,420+$0.02 (+0.09%)
$21.37$21.76$21.35$21.6632,502+$0.31 (+1.45%)
$21.255$21.9524$21.255$21.3573,082+$0.08 (+0.38%)
$21.36$21.48$21.22$21.2747,514-$0.03 (-0.14%)
$21.43$21.595$20.98$21.3087,565+$0.03 (+0.14%)
$21.83$21.8715$21.27$21.2781,951-$0.37 (-1.71%)
$21.91$21.91$21.2723$21.6450,582-$0.09 (-0.41%)
$21.80$22.07$21.57$21.7333,457-$0.17 (-0.78%)
$22.05$22.20$21.8101$21.9014,993-$0.13 (-0.59%)
$22.00$22.20$21.75$22.0327,056+$0.18 (+0.82%)
$22.16$22.2399$21.72$21.8547,827-$0.20 (-0.91%)
$21.88$22.37$21.88$22.055,977+$0.04 (+0.18%)
$21.87$22.25$21.87$22.0127,288-$0.03 (-0.14%)
$21.92$22.26$21.92$22.0422,531+$0.01 (+0.05%)
$21.91$22.1767$21.79$22.0324,108+$0.03 (+0.14%)
$22.01$22.20$21.84$22.0035,884-$0.01 (-0.05%)
$21.89$22.202$21.87$22.0135,097+$0.22 (+1.01%)
$21.77$22.25$21.70$21.79107,694-$0.11 (-0.50%)
$22.24$22.24$21.77$21.9026,873-$0.14 (-0.64%)
$22.05$22.31$21.75$22.0413,430-$0.05 (-0.23%)
$21.81$22.4358$21.81$22.0921,487+$0.13 (+0.59%)
$22.21$22.5232$21.86$21.9625,466-$0.19 (-0.86%)
$22.29$22.54$21.70$22.1547,002-$0.14 (-0.63%)
$22.38$22.38$22.22$22.2912,581$0.00 (0.00%)
$22.11$22.32$22.095$22.2912,074+$0.19 (+0.86%)
$22.19$22.4454$22.02$22.1060,373-$0.26 (-1.16%)
$22.4946$22.52$22.26$22.3610,529+$0.07 (+0.31%)
$22.37$22.8872$22.27$22.2918,425+$0.03 (+0.13%)
$22.52$22.96$22.26$22.2624,079-$0.27 (-1.20%)
$22.51$22.84$22.40$22.5328,755-$0.13 (-0.57%)
$22.41$22.9258$22.41$22.6610,469+$0.13 (+0.58%)
$22.82$22.825$22.53$22.5311,299-$0.12 (-0.53%)

Verified data

Trading days shown
60
Coverage start
June 25, 2026
Coverage end
September 18, 2026
Display currency
USD
Market data provider
Polygon

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Read the frequently asked questions.

What is Westlake Chemical Partners's latest verified closing price?

Westlake Chemical Partners closed at $21.22 on September 18, 2026.

What period does Westlake Chemical Partners's price history cover?

The page shows 60 verified sessions from June 25, 2026 through September 18, 2026.

What data is included in Westlake Chemical Partners's daily price history?

Each row includes the open, high, low, close, volume and change from the prior close.

Does Westlake Chemical Partners's price history include market holidays?

The table contains only verified trading sessions and does not create prices for market holidays.

What is the source for Westlake Chemical Partners's daily prices?

Daily aggregate prices are provided by Polygon.