Boston Partners
MGNI icon

Boston Partners’s Magnite MGNI Stock Holding History

Boston Partners’s Portfolio MGNI Stock Details MGNI Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q1 		$56.1M Buy
4,719,863
+610,970
+15% +$8.19M 0.06% 250
2025
Q4 		$66.6M Sell
4,108,893
-340,111
-8% -$5.65M 0.07% 241
2025
Q3 		$95.2M Sell
4,449,004
-1,125,600
-20% -$26.6M 0.1% 215
2025
Q2 		$133M Buy
5,574,604
+298,248
+6% +$4.39M 0.15% 199
2025
Q1 		$60.2M Buy
5,276,356
+520,033
+11% +$8.29M 0.07% 227
2024
Q4 		$76.1M Buy
4,756,323
+1,336,458
+39% +$19.6M 0.09% 214
2024
Q3 		$46.4M Buy
3,419,865
+1,311,393
+62% +$17.9M 0.05% 244
2024
Q2 		$28.3M Buy
+2,108,472
New +$23M 0.04% 284
2020
Q1 		– Sell
-346,082
Closed -$2.82M – 708
2019
Q4 		$2.82M Sell
346,082
-34,087
-9% -$280K ﹤0.01% 430
2019
Q3 		$3.31M Buy
380,169
+12,750
+3% +$112K ﹤0.01% 416
2019
Q2 		$2.34M Sell
367,419
-81,157
-18% -$498K ﹤0.01% 506
2019
Q1 		$2.73M Buy
448,576
+5,809
+1% +$29.9K ﹤0.01% 496
2018
Q4 		$1.65M Sell
442,767
-103,068
-19% -$394K ﹤0.01% 580
2018
Q3 		$1.97M Sell
545,835
-15,432
-3% -$54.5K ﹤0.01% 611
2018
Q2 		$1.6M Buy
+561,267
New +$1.34M ﹤0.01% 693
2017
Q2 		– Sell
-258,521
Closed -$1.52M – 771
2017
Q1 		$1.52M Hold
258,521
– – ﹤0.01% 684
2016
Q4 		$1.92M Buy
+258,521
New +$2.01M ﹤0.01% 673

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