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
|
+$29.3M |
| 2 |
Industrial Select Sector SPDR Fund
XLI
|
+$23.1M |
| 3 |
iShares Russell 2000 ETF
IWM
|
+$18M |
| 4 |
Netflix
NFLX
|
+$17.4M |
| 5 |
iShares 20+ Year Treasury Bond ETF
TLT
|
+$14M |
Top Sells
| 1 |
Invesco QQQ Trust
QQQ
|
+$120M |
| 2 |
SPDR S&P 500 ETF Trust
SPY
|
+$41.3M |
| 3 |
Walt Disney
DIS
|
+$26.9M |
| 4 |
Alphabet (Google) Class A
GOOGL
|
+$13.8M |
| 5 |
Johnson & Johnson
JNJ
|
+$11.3M |
Sector Composition
| 1 | Technology | 16.22% |
| 2 | Communication Services | 16.19% |
| 3 | Healthcare | 11.36% |
| 4 | Industrials | 9.74% |
| 5 | Consumer Discretionary | 8.61% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
301
BBVA Argentina
BBAR
$1.9B
| $776K | ﹤0.01% |
68,638
+24,848
| +57% | +$281K |
|
302
Amphenol
APH
$143B
| $773K | ﹤0.01% |
32,244
+27,196
| +539% | +$652K |
|
303
Element Solutions
ESI
$6.35B
| $768K | ﹤0.01% |
74,343
+49,458
| +199% | +$511K |
|
304
Sociedad Química y Minera de Chile
SQM
$13B
| $766K | ﹤0.01% |
+24,633
| New | +$766K |
|
305
A10 Networks
ATEN
$1.26B
| $765K | ﹤0.01% |
112,248
+17,161
| +18% | +$117K |
|
306
Cameco
CCJ
$33.6B
| $765K | ﹤0.01% |
71,299
-59,734
| -46% | -$641K |
|
|
KEM
307
DELISTED
KEMET Corporation
KEM
| $765K | ﹤0.01% |
+40,700
| New | +$765K |
|
308
Cars.com
CARS
$830M
| $762K | ﹤0.01% |
38,689
-15,854
| -29% | -$312K |
|
309
Molson Coors Class B
TAP
$9.86B
| $758K | ﹤0.01% |
13,539
-5,654
| -29% | -$317K |
|
310
DMC Global
BOOM
$151M
| $756K | ﹤0.01% |
+11,945
| New | +$756K |
|
311
Bunge Global
BG
$16.9B
| $755K | ﹤0.01% |
13,560
+1,030
| +8% | +$57.3K |
|
312
Esperion Therapeutics
ESPR
$512M
| $750K | ﹤0.01% |
16,141
+3,433
| +27% | +$160K |
|
|
HYGS
313
DELISTED
Hydrogenics Corp
HYGS
| $747K | ﹤0.01% |
50,348
+46,155
| +1,101% | +$685K |
|
314
Nokia
NOK
$24.7B
| $744K | ﹤0.01% |
+148,581
| New | +$744K |
|
315
Paylocity
PCTY
$9.54B
| $743K | ﹤0.01% |
7,925
+7,238
| +1,054% | +$679K |
|
316
ProShares Trust UltraShort Lehman 20+ Year Treasury
TBT
$285M
| $743K | ﹤0.01% |
25,692
+8,913
| +53% | +$258K |
|
317
iShares MSCI Saudi Arabia ETF
KSA
$570M
| $741K | ﹤0.01% |
22,470
+8,095
| +56% | +$267K |
|
|
AVYA
318
DELISTED
Avaya Holdings Corp. Common Stock
AVYA
| $740K | ﹤0.01% |
+62,198
| New | +$740K |
|
|
CIT
319
DELISTED
CIT Group Inc.
CIT
| $740K | ﹤0.01% |
+14,099
| New | +$740K |
|
320
Booz Allen Hamilton
BAH
$12.5B
| $737K | ﹤0.01% |
+11,140
| New | +$737K |
|
321
Direxion Daily CSI 300 China A Share Bull 2X Shares
CHAU
$163M
| $730K | ﹤0.01% |
32,568
+4,371
| +16% | +$98K |
|
322
Cleveland-Cliffs
CLF
$5.45B
| $730K | ﹤0.01% |
+68,422
| New | +$730K |
|
323
Green Dot
GDOT
$766M
| $730K | ﹤0.01% |
+14,941
| New | +$730K |
|
|
TSG
324
DELISTED
The Stars Group Inc.
TSG
| $730K | ﹤0.01% |
42,780
+2,533
| +6% | +$43.2K |
|
|
WPX
325
DELISTED
WPX Energy, Inc.
WPX
| $729K | ﹤0.01% |
63,378
+13,096
| +26% | +$151K |
|