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 | |
|---|---|---|---|---|---|---|
826
NNN REIT
NNN
$8.06B
| $108K | ﹤0.01% |
2,598
-253
| -9% | -$10.5K |
|
827
Apple Hospitality REIT
APLE
$2.97B
| $107K | ﹤0.01% |
+5,710
| New | +$107K |
|
828
Ooma
OOMA
$345M
| $107K | ﹤0.01% |
10,215
-3,327
| -25% | -$34.9K |
|
|
FNSR
829
DELISTED
Finisar Corp
FNSR
| $107K | ﹤0.01% |
4,867
-91,085
| -95% | -$2M |
|
830
Edgewell Personal Care
EPC
$1.01B
| $106K | ﹤0.01% |
1,458
-1,972
| -57% | -$143K |
|
831
Steris
STE
$24B
| $105K | ﹤0.01% |
+1,196
| New | +$105K |
|
|
PTR
832
DELISTED
PETROCHINA COMPANY LIMITED ADS (REP 100 H SHARES)
PTR
| $105K | ﹤0.01% |
+1,641
| New | +$105K |
|
833
Kodak
KODK
$464M
| $104K | ﹤0.01% |
14,217
+10,127
| +248% | +$74.1K |
|
|
STML
834
DELISTED
Stemline Therapeutics, Inc.
STML
| $104K | ﹤0.01% |
9,436
+5,878
| +165% | +$64.8K |
|
835
Ultra Clean Holdings
UCTT
$1.12B
| $103K | ﹤0.01% |
3,393
+3,093
| +1,031% | +$93.9K |
|
|
LEAF
836
DELISTED
Leaf Group Ltd.
LEAF
| $103K | ﹤0.01% |
14,949
-2,255
| -13% | -$15.5K |
|
|
QHC
837
DELISTED
Quorum Health Corporation
QHC
| $103K | ﹤0.01% |
19,909
+16,422
| +471% | +$85K |
|
|
BSFT
838
DELISTED
BroadSoft, Inc.
BSFT
| $103K | ﹤0.01% |
2,050
-26,703
| -93% | -$1.34M |
|
839
Carter's
CRI
$1.04B
| $102K | ﹤0.01% |
1,039
+919
| +766% | +$90.2K |
|
840
Cedar Fair
FUN
$2.19B
| $102K | ﹤0.01% |
1,605
-3,094
| -66% | -$197K |
|
841
Natera
NTRA
$23.3B
| $101K | ﹤0.01% |
+7,839
| New | +$101K |
|
842
Teekay
TK
$721M
| $101K | ﹤0.01% |
11,386
-38,324
| -77% | -$340K |
|
|
QIWI
843
DELISTED
QIWI PLC
QIWI
| $101K | ﹤0.01% |
5,985
-22,212
| -79% | -$375K |
|
844
Extreme Networks
EXTR
$2.96B
| $100K | ﹤0.01% |
+8,428
| New | +$100K |
|
|
SHYF
845
DELISTED
The Shyft Group
SHYF
| $100K | ﹤0.01% |
+9,063
| New | +$100K |
|
|
BRCD
846
DELISTED
Brocade Communications Systems, Inc. NEW
BRCD
| $100K | ﹤0.01% |
+8,370
| New | +$100K |
|
847
Gold Fields
GFI
$33.1B
| $99K | ﹤0.01% |
23,169
-25,444
| -52% | -$109K |
|
848
Progress Software
PRGS
$1.83B
| $99K | ﹤0.01% |
2,610
-4,192
| -62% | -$159K |
|
849
Telefônica Brasil
VIV
$19.7B
| $99K | ﹤0.01% |
6,304
-19,917
| -76% | -$313K |
|
850
Acacia Research
ACTG
$304M
| $98K | ﹤0.01% |
21,746
+21,624
| +17,725% | +$97.5K |
|