Simplex Trading Portfolio holdings
Simplex Trading, founded in 2004 and headquartered in Chicago, Illinois, is a technology-driven proprietary trading firm specializing in market-making and liquidity provision, primarily in U.S. equity options and futures options. Leveraging advanced proprietary software and data-driven analysis, the firm optimizes trading strategies and develops innovative solutions to capitalize on financial market opportunities, maintaining a competitive edge through automation and a collaborative team of technologists and traders. With a workforce exceeding 300 and led by CEO Erik Swanson since 2014, Simplex operates with a low-ego, high-intelligence culture, focusing on minimal bureaucracy and rapid execution, while also making strategic venture capital investments in fintech startups. Recognized as a top workplace in Chicago by Built In’s 2025 awards, Simplex continues to evolve, blending cutting-edge technology with a commitment to market efficiency and growth.
Top Buys
| 1 |
Apple
AAPL
|
+$586M |
| 2 |
Strategy Inc Common Stock Class A
MSTR
|
+$82.5M |
| 3 |
Intel
INTC
|
+$40.4M |
| 4 |
Invesco QQQ Trust
QQQ
|
+$39.4M |
| 5 |
Uber
UBER
|
+$36.3M |
Top Sells
| 1 |
NVIDIA
NVDA
|
+$130M |
| 2 |
Pinduoduo
PDD
|
+$95.7M |
| 3 |
Boeing
BA
|
+$56.2M |
| 4 |
KraneShares CSI China Internet ETF
KWEB
|
+$40.7M |
| 5 |
Microsoft
MSFT
|
+$40.5M |
Sector Composition
| 1 | Technology | 34.29% |
| 2 | Consumer Discretionary | 11.38% |
| 3 | Healthcare | 9.65% |
| 4 | Financials | 6.33% |
| 5 | Communication Services | 5.52% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1026
RXO
RXO
$2.74B
| $165K | ﹤0.01% |
6,934
-4,360
| -39% | -$104K |
|
|
YALA
1027
Yalla Group
YALA
$1.16B
| $165K | ﹤0.01% |
40,742
-26,257
| -39% | -$106K |
|
1028
Quest Diagnostics
DGX
$20.1B
| $164K | ﹤0.01% |
+1,088
| New | +$164K |
|
1029
FIVE9
FIVN
$1.95B
| $164K | ﹤0.01% |
+4,060
| New | +$164K |
|
1030
iShares Russell 2000 Growth ETF
IWO
$12.5B
| $164K | ﹤0.01% |
+572
| New | +$164K |
|
|
SDIG
1031
DELISTED
Stronghold Digital Mining, Inc. Class A Common Stock
SDIG
| $163K | ﹤0.01% |
+46,766
| New | +$163K |
|
1032
ATAI Life Sciences
ATAI
$1.01B
| $162K | ﹤0.01% |
121,984
+120,356
| +7,393% | +$160K |
|
1033
MannKind Corp
MNKD
$1.71B
| $161K | ﹤0.01% |
25,116
+14,310
| +132% | +$91.7K |
|
1034
Direxion Daily Dow Jones Internet Bull 3X Shares
WEBL
$162M
| $161K | ﹤0.01% |
6,032
+2,794
| +86% | +$74.6K |
|
1035
PIMCO 25+ Year Zero Coupon US Treasury Index Exchange-Traded Fund
ZROZ
$1.72B
| $161K | ﹤0.01% |
2,347
+1,577
| +205% | +$108K |
|
1036
Riskified
RSKD
$715M
| $158K | ﹤0.01% |
33,559
-1,503
| -4% | -$7.08K |
|
1037
MarketAxess Holdings
MKTX
$6.9B
| $157K | ﹤0.01% |
+697
| New | +$157K |
|
|
NARI
1038
DELISTED
Inari Medical, Inc. Common Stock
NARI
| $157K | ﹤0.01% |
+3,085
| New | +$157K |
|
1039
Extreme Networks
EXTR
$2.96B
| $155K | ﹤0.01% |
9,270
+4,638
| +100% | +$77.6K |
|
1040
Aemetis
AMTX
$136M
| $155K | ﹤0.01% |
57,623
+18,776
| +48% | +$50.5K |
|
1041
Direxion Daily Healthcare Bull 3X Shares
CURE
$165M
| $155K | ﹤0.01% |
+1,683
| New | +$155K |
|
|
CMRX
1042
DELISTED
Chimerix, Inc.
CMRX
| $155K | ﹤0.01% |
44,686
+24,380
| +120% | +$84.6K |
|
|
CYBN
1043
Cybin
CYBN
$148M
| $154K | ﹤0.01% |
+17,563
| New | +$154K |
|
|
PPTA
1044
Perpetua Resources
PPTA
$1.86B
| $154K | ﹤0.01% |
14,464
-100
| -0.7% | -$1.07K |
|
1045
Valkyrie ETF Trust II CoinShares Bitcoin and Ether ETF
BTF
$41.6M
| $153K | ﹤0.01% |
10,484
+7,683
| +274% | +$112K |
|
1046
Concentrix
CNXC
$3.25B
| $152K | ﹤0.01% |
+3,513
| New | +$152K |
|
|
CRESY
1047
Cresud
CRESY
$545M
| $152K | ﹤0.01% |
12,103
+7,646
| +172% | +$96K |
|
1048
Grifois
GRFS
$6.7B
| $151K | ﹤0.01% |
20,373
-59,709
| -75% | -$443K |
|
1049
Valens Semiconductor
VLN
$197M
| $151K | ﹤0.01% |
58,151
+51,151
| +731% | +$133K |
|
1050
Annexon
ANNX
$252M
| $150K | ﹤0.01% |
29,433
+3,603
| +14% | +$18.4K |
|