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 |
NVIDIA
NVDA
|
+$60M |
| 2 |
Microsoft
MSFT
|
+$58.6M |
| 3 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$52.5M |
| 4 |
PayPal
PYPL
|
+$40.9M |
| 5 |
Netflix
NFLX
|
+$29.7M |
Top Sells
| 1 |
Apple
AAPL
|
+$48.7M |
| 2 |
Walmart
WMT
|
+$45.2M |
| 3 |
Adobe
ADBE
|
+$40.6M |
| 4 |
VanEck Oil Services ETF
OIH
|
+$34.2M |
| 5 |
Enphase Energy
ENPH
|
+$27.2M |
Sector Composition
| 1 | Technology | 21.17% |
| 2 | Healthcare | 10.87% |
| 3 | Consumer Discretionary | 10.73% |
| 4 | Communication Services | 10.55% |
| 5 | Financials | 7.54% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
|
ARTY
1551
iShares Future AI & Tech ETF
ARTY
$1.52B
| $20K | ﹤0.01% |
619
+587
| +1,834% | +$19K |
|
|
FAZE
1552
DELISTED
FaZe Holdings Inc. Common Stock
FAZE
| $20K | ﹤0.01% |
42,319
-94,340
| -69% | -$44.6K |
|
|
KLR
1553
DELISTED
Kaleyra, Inc.
KLR
| $20K | ﹤0.01% |
3,073
+2,106
| +218% | +$13.7K |
|
|
ARBK
1554
Argo Blockchain
ARBK
$19.1M
| $19K | ﹤0.01% |
+12,392
| New | +$19K |
|
|
BPT
1555
DELISTED
BP Prudhoe Bay Royalty Trust
BPT
| $19K | ﹤0.01% |
+4,252
| New | +$19K |
|
1556
BrightView Holdings
BV
$1.29B
| $19K | ﹤0.01% |
2,774
-19,091
| -87% | -$131K |
|
1557
Castor Maritime
CTRM
$21.5M
| $19K | ﹤0.01% |
4,364
+1,162
| +36% | +$5.06K |
|
1558
Definitive Healthcare
DH
$445M
| $19K | ﹤0.01% |
1,792
-1,398
| -44% | -$14.8K |
|
1559
Douglas Elliman
DOUG
$276M
| $19K | ﹤0.01% |
8,766
-6,036
| -41% | -$13.1K |
|
1560
Vertical Aerospace
EVTL
$511M
| $19K | ﹤0.01% |
1,010
-88
| -8% | -$1.66K |
|
1561
Edgewise Therapeutics
EWTX
$1.64B
| $19K | ﹤0.01% |
2,529
-446
| -15% | -$3.35K |
|
|
GOGL
1562
DELISTED
Golden Ocean Group
GOGL
| $19K | ﹤0.01% |
2,519
-4,623
| -65% | -$34.9K |
|
1563
iShares Global Energy ETF
IXC
$1.86B
| $19K | ﹤0.01% |
532
-247
| -32% | -$8.82K |
|
|
NEXN
1564
Nexxen International
NEXN
$594M
| $19K | ﹤0.01% |
2,777
-689
| -20% | -$4.71K |
|
1565
Planet Labs
PL
$3.27B
| $19K | ﹤0.01% |
5,961
-43,671
| -88% | -$139K |
|
1566
Smith Micro Software
SMSI
$16.2M
| $19K | ﹤0.01% |
+2,250
| New | +$19K |
|
1567
Stereotaxis
STXS
$255M
| $19K | ﹤0.01% |
12,779
-638
| -5% | -$949 |
|
1568
ThredUp
TDUP
$1.31B
| $19K | ﹤0.01% |
7,794
-7,034
| -47% | -$17.1K |
|
|
RNLX
1569
DELISTED
Renalytix plc American Depositary Shares
RNLX
| $19K | ﹤0.01% |
6,811
+2,160
| +46% | +$6.03K |
|
1570
Assurant
AIZ
$10.5B
| $18K | ﹤0.01% |
+146
| New | +$18K |
|
1571
Amplitude
AMPL
$1.58B
| $18K | ﹤0.01% |
1,691
+343
| +25% | +$3.65K |
|
1572
Barings BDC
BBDC
$972M
| $18K | ﹤0.01% |
2,324
-3,298
| -59% | -$25.5K |
|
1573
Global X Cybersecurity ETF
BUG
$1.16B
| $18K | ﹤0.01% |
+766
| New | +$18K |
|
1574
Betterware México
BWMX
$504M
| $18K | ﹤0.01% |
+1,413
| New | +$18K |
|
1575
VanEck Oil Refiners ETF
CRAK
$27.7M
| $18K | ﹤0.01% |
+625
| New | +$18K |
|