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 |
LNKD
LinkedIn Corporation
LNKD
|
+$29.3M |
| 2 |
SPDR Gold Trust
GLD
|
+$18.1M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$14.9M |
| 4 |
Biogen
BIIB
|
+$13.7M |
| 5 |
Visa
V
|
+$13.3M |
Top Sells
| 1 |
Broadcom
AVGO
|
+$37.4M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$13.9M |
| 5 |
SPDR S&P MidCap 400 ETF Trust
MDY
|
+$12.9M |
Sector Composition
| 1 | Communication Services | 12.51% |
| 2 | Healthcare | 12.38% |
| 3 | Technology | 12.22% |
| 4 | Consumer Discretionary | 8.59% |
| 5 | Financials | 8.53% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Shares Change % | Capital Flow | |
|---|---|---|---|---|---|---|
551
ProShares UltraPro Short S&P 500
SPXU
$518M
| $173K | 0.01% |
+66
| New | +$173K |
|
|
ELME
552
Elme Communities
ELME
$1.51B
| $171K | 0.01% |
5,462
+2,946
| +117% | +$92.2K |
|
553
Eaton
ETN
$140B
| $171K | 0.01% |
2,868
-1,517
| -35% | -$90.4K |
|
|
LGF
554
DELISTED
Lions Gate Entertainment
LGF
| $171K | 0.01% |
+8,467
| New | +$171K |
|
|
ENLK
555
DELISTED
EnLink Midstream Partners, LP
ENLK
| $170K | 0.01% |
+10,244
| New | +$170K |
|
|
TAL
556
DELISTED
TAL INTERNATIONAL GROUP, INC.
TAL
| $170K | 0.01% |
12,715
+1,751
| +16% | +$23.4K |
|
557
Delek Logistics
DKL
$2.36B
| $169K | 0.01% |
+6,343
| New | +$169K |
|
558
Sasol
SSL
$4.52B
| $169K | 0.01% |
+6,263
| New | +$169K |
|
|
FINL
559
DELISTED
Finish Line
FINL
| $167K | 0.01% |
8,296
+1,954
| +31% | +$39.3K |
|
560
Cameco
CCJ
$34.7B
| $165K | 0.01% |
15,056
-5,118
| -25% | -$56.1K |
|
561
Vanguard High Dividend Yield ETF
VYM
$64.6B
| $164K | 0.01% |
2,302
+181
| +9% | +$12.9K |
|
562
City Holding Co
CHCO
$1.84B
| $163K | 0.01% |
3,596
+1,364
| +61% | +$61.8K |
|
563
Direxion Daily S&P Oil & Gas Exp & Prod Bear 2X Shares
DRIP
$50.7M
| $163K | 0.01% |
+120
| New | +$163K |
|
564
Telephone and Data Systems
TDS
$4.42B
| $163K | 0.01% |
5,513
-1,448
| -21% | -$42.8K |
|
565
Prudential
PUK
$35.5B
| $162K | 0.01% |
4,937
+4,865
| +6,757% | +$160K |
|
|
DD
566
DELISTED
Du Pont De Nemours E I
DD
| $162K | 0.01% |
2,500
-27,450
| -92% | -$1.78M |
|
567
ODP
ODP
$618M
| $161K | 0.01% |
4,879
+3,782
| +345% | +$125K |
|
|
JKS
568
JinkoSolar
JKS
$1.23B
| $159K | 0.01% |
7,841
+4,208
| +116% | +$85.3K |
|
569
National Healthcare
NHC
$1.75B
| $159K | 0.01% |
2,465
-835
| -25% | -$53.9K |
|
|
AVH
570
DELISTED
AVIANCA HOLDINGS S.A.
AVH
| $159K | 0.01% |
25,815
+17,628
| +215% | +$109K |
|
571
iShares S&P 100 ETF
OEF
$22.4B
| $158K | 0.01% |
1,706
+509
| +43% | +$47.1K |
|
|
JASO
572
DELISTED
JA Solar Holdings, Co., Ltd
JASO
| $158K | 0.01% |
+23,082
| New | +$158K |
|
573
Hilltop Holdings
HTH
$2.19B
| $157K | 0.01% |
7,486
+6,715
| +871% | +$141K |
|
574
Ionis Pharmaceuticals
IONS
$10.1B
| $157K | 0.01% |
6,776
-3,212
| -32% | -$74.4K |
|
575
Sturm, Ruger & Co
RGR
$566M
| $157K | 0.01% |
2,458
-4,469
| -65% | -$285K |
|