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
|
$80M |
| 2 |
iShares 20+ Year Treasury Bond ETF
TLT
|
$45.3M |
| 3 |
Alphabet (Google) Class C
GOOG
|
$38.8M |
| 4 |
Amazon
AMZN
|
$38.6M |
| 5 |
Tesla
TSLA
|
$36M |
Top Sells
| 1 |
Alibaba
BABA
|
$46.4M |
| 2 |
Boeing
BA
|
$29.8M |
| 3 |
SPDR Gold Trust
GLD
|
$18.2M |
| 4 |
Biogen
BIIB
|
$15.8M |
| 5 |
NVIDIA
NVDA
|
$14.3M |
Sector Composition
| 1 | Technology | 22.73% |
| 2 | Consumer Discretionary | 17.54% |
| 3 | Communication Services | 10.03% |
| 4 | Healthcare | 9.29% |
| 5 | Industrials | 5.63% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
276
Textron
TXT
$14.5B
| $1.03M | ﹤0.01% |
22,997
+22,846
| +15,130% | +$1.02M |
|
|
SSI
277
DELISTED
Stage Stores Inc
SSI
| $1.02M | ﹤0.01% |
125,980
+111,235
| +754% | +$902K |
|
|
XLNX
278
DELISTED
Xilinx Inc
XLNX
| $1.02M | ﹤0.01% |
+10,411
| New | +$1.02M |
|
279
Cirrus Logic
CRUS
$5.94B
| $1.01M | ﹤0.01% |
+12,285
| New | +$1.01M |
|
280
Fortinet
FTNT
$60.4B
| $1.01M | ﹤0.01% |
+47,230
| New | +$1.01M |
|
281
Cameco
CCJ
$33B
| $1.01M | ﹤0.01% |
+113,168
| New | +$1.01M |
|
282
Corteva
CTVA
$49.1B
| $997K | ﹤0.01% |
+33,742
| New | +$997K |
|
|
LSI
283
DELISTED
Life Storage, Inc.
LSI
| $982K | ﹤0.01% |
13,611
+10,548
| +344% | +$761K |
|
|
RCM
284
DELISTED
R1 RCM Inc. Common Stock
RCM
| $978K | ﹤0.01% |
75,393
+14,990
| +25% | +$194K |
|
|
FSCT
285
DELISTED
ForeScout Technologies, Inc. Common Stock
FSCT
| $975K | ﹤0.01% |
29,727
+25,905
| +678% | +$850K |
|
286
TechnipFMC
FTI
$16B
| $968K | ﹤0.01% |
60,713
+623
| +1% | +$9.93K |
|
|
CASA
287
DELISTED
Casa Systems, Inc. Common Stock
CASA
| $963K | ﹤0.01% |
235,682
+235,110
| +41,103% | +$961K |
|
288
Fluor
FLR
$6.72B
| $961K | ﹤0.01% |
50,907
-17,050
| -25% | -$322K |
|
289
Interactive Brokers
IBKR
$26.8B
| $958K | ﹤0.01% |
+82,244
| New | +$958K |
|
290
Methanex
MEOH
$2.99B
| $952K | ﹤0.01% |
+24,648
| New | +$952K |
|
291
Vanguard Total Stock Market ETF
VTI
$528B
| $952K | ﹤0.01% |
+5,819
| New | +$952K |
|
292
Unilever
UL
$158B
| $944K | ﹤0.01% |
16,525
+9,684
| +142% | +$553K |
|
293
Supernus Pharmaceuticals
SUPN
$2.58B
| $941K | ﹤0.01% |
39,688
+19,143
| +93% | +$454K |
|
|
KEM
294
DELISTED
KEMET Corporation
KEM
| $941K | ﹤0.01% |
34,822
-45,782
| -57% | -$1.24M |
|
295
Weibo
WB
$2.87B
| $940K | ﹤0.01% |
+20,299
| New | +$940K |
|
296
NewMarket
NEU
$7.64B
| $939K | ﹤0.01% |
1,931
+1,615
| +511% | +$785K |
|
297
Ameriprise Financial
AMP
$46.1B
| $927K | ﹤0.01% |
+5,565
| New | +$927K |
|
298
Materials Select Sector SPDR Fund
XLB
$5.52B
| $923K | ﹤0.01% |
+15,035
| New | +$923K |
|
|
FLG
299
Flagstar Financial, Inc.
FLG
$5.39B
| $923K | ﹤0.01% |
25,605
-1,078
| -4% | -$38.9K |
|
|
COUP
300
DELISTED
Coupa Software Incorporated
COUP
| $921K | ﹤0.01% |
+6,301
| New | +$921K |
|