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 |
Amazon
AMZN
|
$44.9M |
| 2 |
iShares Russell 2000 ETF
IWM
|
$31.7M |
| 3 |
TWX
Time Warner Inc
TWX
|
$26.1M |
| 4 |
Booking.com
BKNG
|
$21.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
$18.2M |
Top Sells
| 1 |
SPDR S&P 500 ETF Trust
SPY
|
$42.8M |
| 2 |
Amgen
AMGN
|
$32.3M |
| 3 |
Baidu
BIDU
|
$21.9M |
| 4 |
Micron Technology
MU
|
$21.2M |
| 5 |
Alphabet (Google) Class A
GOOGL
|
$17.7M |
Sector Composition
| 1 | Consumer Discretionary | 21.41% |
| 2 | Technology | 19.71% |
| 3 | Communication Services | 17.68% |
| 4 | Healthcare | 6.08% |
| 5 | Financials | 5.75% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
376
Invesco
IVZ
$9.81B
| $540K | 0.02% |
+15,437
| New | +$540K |
|
377
SM Energy
SM
$3.09B
| $539K | 0.02% |
30,429
-7,915
| -21% | -$140K |
|
378
Dick's Sporting Goods
DKS
$17.7B
| $537K | 0.02% |
19,897
+8,963
| +82% | +$242K |
|
379
Cardinal Health
CAH
$35.7B
| $533K | 0.02% |
+7,975
| New | +$533K |
|
380
Intercontinental Exchange
ICE
$99.8B
| $533K | 0.02% |
+7,765
| New | +$533K |
|
|
MNDT
381
DELISTED
Mandiant, Inc. Common Stock
MNDT
| $528K | 0.02% |
31,511
+22,456
| +248% | +$376K |
|
|
DERM
382
DELISTED
Dermira, Inc.
DERM
| $526K | 0.02% |
19,505
+16,422
| +533% | +$443K |
|
383
Lexicon Pharmaceuticals
LXRX
$396M
| $523K | 0.02% |
+42,616
| New | +$523K |
|
|
LL
384
DELISTED
LL Flooring Holdings, Inc.
LL
| $518K | 0.02% |
13,312
-272
| -2% | -$10.6K |
|
385
Spectrum Brands
SPB
$1.38B
| $515K | 0.02% |
4,871
-1,430
| -23% | -$151K |
|
386
DXC Technology
DXC
$2.65B
| $513K | 0.02% |
6,912
+6,709
| +3,305% | +$498K |
|
387
Tapestry
TPR
$21.7B
| $513K | 0.02% |
12,736
+12,636
| +12,636% | +$509K |
|
|
GNC
388
DELISTED
GNC Holdings, Inc.
GNC
| $513K | 0.02% |
58,126
+57,179
| +6,038% | +$505K |
|
|
JO
389
DELISTED
iPath Bloomberg Coffee Subindex Total Return ETN due June 24, 2038
JO
| $511K | 0.02% |
30,800
-11,318
| -27% | -$188K |
|
|
BBBY
390
Bed Bath & Beyond, Inc.
BBBY
$567M
| $508K | 0.02% |
+20,730
| New | +$508K |
|
391
e.l.f. Beauty
ELF
$7.6B
| $507K | 0.02% |
+22,493
| New | +$507K |
|
|
KBAL
392
DELISTED
Kimball International
KBAL
| $505K | 0.02% |
+25,564
| New | +$505K |
|
|
NEX
393
DELISTED
NexTier Oilfield Solutions Inc.
NEX
| $504K | 0.02% |
30,255
-14,076
| -32% | -$234K |
|
394
Zillow
ZG
$20.5B
| $499K | 0.02% |
12,452
+5,486
| +79% | +$220K |
|
395
Huntington Ingalls Industries
HII
$10.6B
| $498K | 0.02% |
2,201
-340
| -13% | -$76.9K |
|
|
HZN
396
DELISTED
Horizon Global Corporation
HZN
| $498K | 0.02% |
28,232
+17,778
| +170% | +$314K |
|
|
HOME
397
DELISTED
At Home Group Inc.
HOME
| $497K | 0.02% |
+21,777
| New | +$497K |
|
398
RenaissanceRe
RNR
$11.3B
| $496K | 0.02% |
+3,676
| New | +$496K |
|
399
World Acceptance Corp
WRLD
$942M
| $494K | 0.02% |
5,963
+3,773
| +172% | +$313K |
|
|
TEN
400
DELISTED
Tenneco Inc. Class A Voting Common Stock
TEN
| $491K | 0.02% |
+8,095
| New | +$491K |
|