Simplex Trading
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Simplex Trading’s MongoDB MDB Stock Holding History

Simplex Trading’s Portfolio MDB Stock Details MDB Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2026
Q3 		$13.3M Buy
+38,059
New +$14.4M 0.01% 625
2025
Q3 		– Sell
-24,049
Closed -$6.18M – 9627
2025
Q2 		$5.05M Buy
+24,049
New +$4.45M ﹤0.01% 1331
2024
Q3 		– Sell
-13,683
Closed -$3.55M – 9123
2024
Q2 		$3.42M Buy
13,683
+9,365
+217% +$2.96M ﹤0.01% 1715
2024
Q1 		$1.55M Sell
4,318
-35,929
-89% -$14.7M ﹤0.01% 2663
2023
Q4 		$16.5M Buy
40,247
+26,073
+184% +$9.9M 0.01% 805
2023
Q3 		$4.9M Buy
14,174
+14,024
+9,349% +$5.32M ﹤0.01% 1368
2023
Q2 		$61K Sell
150
-48,168
-100% -$14M ﹤0.01% 5625
2023
Q1 		$11.3M Buy
48,318
+45,528
+1,632% +$9.6M 0.01% 833
2022
Q4 		$549K Sell
2,790
-11,179
-80% -$1.99M ﹤0.01% 3070
2022
Q3 		$2.77M Sell
13,969
-3,045
-18% -$889K ﹤0.01% 1686
2022
Q2 		$4.42M Buy
17,014
+8,823
+108% +$2.76M ﹤0.01% 1228
2022
Q1 		$3.63M Sell
8,191
-5,325
-39% -$2.08M ﹤0.01% 1522
2021
Q4 		$7.15M Buy
13,516
+6,242
+86% +$3.2M 0.01% 983
2021
Q3 		$2.6M Sell
7,274
-435
-6% -$175K ﹤0.01% 1828
2021
Q2 		$2.79M Buy
7,709
+2,519
+49% +$779K ﹤0.01% 1761
2021
Q1 		$1.39M Sell
5,190
-7,777
-60% -$2.76M ﹤0.01% 2043
2020
Q4 		$0 Sell
12,967
-4,254
-25% -$1.19M ﹤0.01% 8779
2020
Q3 		$0 Buy
17,221
+2,599
+18% +$563K ﹤0.01% 8175
2020
Q2 		$3.31M Sell
14,622
-5,388
-27% -$998K 0.01% 1120
2020
Q1 		$2.73M Buy
+20,010
New +$2.95M ﹤0.01% 1053
2019
Q4 		– Sell
-21,154
Closed -$2.78M – 7680
2019
Q3 		$2.55M Buy
21,154
+15,830
+297% +$2.28M 0.01% 1142
2019
Q2 		$809K Sell
5,324
-26,611
-83% -$3.86M ﹤0.01% 2098
2019
Q1 		$4.7M Buy
31,935
+28,995
+986% +$2.98M 0.01% 722
2018
Q4 		$246K Sell
2,940
-24,571
-89% -$1.89M ﹤0.01% 2923
2018
Q3 		$2.24M Buy
27,511
+27,335
+15,531% +$1.82M 0.01% 1157
2018
Q2 		$8K Buy
+176
New +$7.9K ﹤0.01% 6467

Other funds holding MDB

Geode Capital Management
Geode Capital Management Boston, Massachusetts $1.92T AUM 36.1% 1-Year Est. Return
Harel Insurance Investments & Financial Services
Harel Insurance Investments & Financial Services Ramat Gan, Israel $21.3B AUM 44.31% 1-Year Est. Return
Congress Asset Management
Congress Asset Management Boston, Massachusetts $15.4B AUM 30.39% 1-Year Est. Return
Swedbank
Swedbank Stockholm, Sweden $118B AUM 40.52% 1-Year Est. Return
Deutsche Bank
Deutsche Bank Frankfurt Am Main Ge, Germany $362B AUM 34.89% 1-Year Est. Return
Bank of New York Mellon
Bank of New York Mellon New York $608B AUM 32.77% 1-Year Est. Return
Dimensional Fund Advisors
Dimensional Fund Advisors Austin, Texas $551B AUM 33.95% 1-Year Est. Return
Amundi
Amundi Paris, France $496B AUM 35.36% 1-Year Est. Return
Allspring Global Investments
Allspring Global Investments Charlotte, North Carolina $64.1B AUM 28.9% 1-Year Est. Return
Squarepoint
Squarepoint New York $90.8B AUM 26.98% 1-Year Est. Return

Simplex Trading's MDB Position: Q3 2026 in Review

Simplex Trading opened a new position in MongoDB (MDB) in Q3 2026: 38,059 shares worth $13.3M. The stake represents 0.01% of the portfolio and ranks #625 among its holdings. This is a return to the name: Simplex Trading previously reported a position in MDB as recently as Q2 2025.

Simplex Trading first reported a position in MDB in Q2 2018 and has held it in 26 quarters since. The position peaked at $16.5M in Q4 2023. 470 funds tracked by Wall St. Rank hold MDB as of Q3 2026.

  • Simplex Trading held 38,059 shares of MongoDB worth $13.3M as of Q3 2026.
  • MongoDB was a new Simplex Trading position in Q3 2026.
  • MongoDB made up 0.01% of Simplex Trading's portfolio in Q3 2026, its #625 holding.
  • Simplex Trading first reported a position in MongoDB in Q2 2018 and has held it in 26 quarters since.
  • Simplex Trading's MongoDB position peaked at $16.5M in Q4 2023.
  • 470 funds tracked by Wall St. Rank held MongoDB as of Q3 2026.

Based on Simplex Trading's 13F filing for Q3 2026, filed 4 Nov 2026.