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 |
Microsoft
MSFT
|
+$101M |
| 2 |
NVIDIA
NVDA
|
+$66M |
| 3 |
Citigroup
C
|
+$51.8M |
| 4 |
Berkshire Hathaway Class B
BRK.B
|
+$42.7M |
| 5 |
SPDR Gold Trust
GLD
|
+$39.4M |
Top Sells
| 1 |
Apple
AAPL
|
+$411M |
| 2 |
Vanguard S&P 500 ETF
VOO
|
+$64M |
| 3 |
Meta Platforms (Facebook)
META
|
+$39.8M |
| 4 |
iShares Core S&P 500 ETF
IVV
|
+$34.3M |
| 5 |
PayPal
PYPL
|
+$32.9M |
Sector Composition
| 1 | Technology | 17.4% |
| 2 | Financials | 12.04% |
| 3 | Consumer Discretionary | 10.17% |
| 4 | Healthcare | 8.63% |
| 5 | Industrials | 6.03% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
1226
Cognyte Software
CGNT
$622M
| $81K | ﹤0.01% |
20,151
+14,178
| +237% | +$57K |
|
1227
The ONE Group
STKS
$81.1M
| $81K | ﹤0.01% |
12,214
+10,347
| +554% | +$68.6K |
|
1228
Zeta Global
ZETA
$4.84B
| $81K | ﹤0.01% |
12,304
-2,770
| -18% | -$18.2K |
|
|
IS
1229
DELISTED
ironSource Ltd.
IS
| $81K | ﹤0.01% |
23,761
-46,933
| -66% | -$160K |
|
1230
Commault Systems
CVLT
$7.82B
| $80K | ﹤0.01% |
1,513
+922
| +156% | +$48.8K |
|
1231
SPDR S&P Software & Services ETF
XSW
$499M
| $80K | ﹤0.01% |
+750
| New | +$80K |
|
|
SRC
1232
DELISTED
SPIRIT REALTY CAPITAL, INC.
SRC
| $80K | ﹤0.01% |
2,224
+1,950
| +712% | +$70.1K |
|
1233
Kratos Defense & Security Solutions
KTOS
$11.7B
| $79K | ﹤0.01% |
7,842
+6,943
| +772% | +$69.9K |
|
1234
WM Technology
MAPS
$131M
| $79K | ﹤0.01% |
49,069
-6,002
| -11% | -$9.66K |
|
1235
Navitas Semiconductor
NVTS
$1.31B
| $79K | ﹤0.01% |
16,367
+15,298
| +1,431% | +$73.8K |
|
1236
RenaissanceRe
RNR
$11.6B
| $79K | ﹤0.01% |
+566
| New | +$79K |
|
1237
Weis Markets
WMK
$1.75B
| $79K | ﹤0.01% |
1,112
+401
| +56% | +$28.5K |
|
|
SCPL
1238
DELISTED
SciPlay Corporation Class A Common Stock
SCPL
| $79K | ﹤0.01% |
6,797
-155
| -2% | -$1.8K |
|
|
VLTA
1239
DELISTED
Volta Inc.
VLTA
| $79K | ﹤0.01% |
65,376
+40,897
| +167% | +$49.4K |
|
1240
Vir Biotechnology
VIR
$695M
| $78K | ﹤0.01% |
+4,082
| New | +$78K |
|
1241
AMC Networks
AMCX
$357M
| $78K | ﹤0.01% |
3,857
+3,230
| +515% | +$65.3K |
|
1242
BJ's Restaurants
BJRI
$684M
| $78K | ﹤0.01% |
3,284
+3,241
| +7,537% | +$77K |
|
|
TPC
1243
Tutor Perini Corporation
TPC
$3.37B
| $78K | ﹤0.01% |
14,267
+14,095
| +8,195% | +$77.1K |
|
|
EGLE
1244
DELISTED
Eagle Bulk Shipping Inc.
EGLE
| $78K | ﹤0.01% |
1,808
-171
| -9% | -$7.38K |
|
1245
Arbutus Biopharma
ABUS
$855M
| $77K | ﹤0.01% |
40,556
-88,835
| -69% | -$169K |
|
1246
SPX Corp
SPXC
$9.21B
| $77K | ﹤0.01% |
1,403
-146
| -9% | -$8.01K |
|
|
BKI
1247
DELISTED
Black Knight, Inc. Common Stock
BKI
| $77K | ﹤0.01% |
1,191
-4,397
| -79% | -$284K |
|
1248
Braze
BRZE
$3.35B
| $76K | ﹤0.01% |
+2,201
| New | +$76K |
|
1249
GrowGeneration
GRWG
$103M
| $76K | ﹤0.01% |
+21,756
| New | +$76K |
|
1250
SPDR Nuveen ICE High Yield Municipal Bond ETF
HYMB
$2.73B
| $76K | ﹤0.01% |
3,192
+740
| +30% | +$17.6K |
|