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
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$21.4M |
| 2 |
SPDR Gold Trust
GLD
|
+$17.3M |
| 3 |
QIHU
QIHOO 360 TECHNOLOGY CO LTD ADS RPSTG 3 CL A SHS
QIHU
|
+$15M |
| 4 |
Biogen
BIIB
|
+$14.9M |
| 5 |
Visa
V
|
+$14.1M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
Broadcom
AVGO
|
+$36.7M |
| 2 |
Alphabet (Google) Class C
GOOG
|
+$20.1M |
| 3 |
iShares MSCI Emerging Markets ETF
EEM
|
+$15.8M |
| 4 |
Citigroup
C
|
+$14.7M |
| 5 |
State Street SPDR S&P MIDCAP 400 ETF Trust
MDY
|
+$13.1M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 6.61% |
| 2 | Healthcare | 6.55% |
| 3 | Technology | 6.45% |
| 4 | Consumer Discretionary | 4.54% |
| 5 | Financials | 4.51% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
1226
BGC Group
BGC
$5.55B
| $142K | 0.01% |
25,494
+23,399
| +1,117% | +$136K |
|
|
SA
1227
CALL
Seabridge Gold
SA
$2.8B
| $142K | 0.01% |
420
+211
| +101% | +$2.86K |
|
|
FLG
1228
Flagstar Bank National Association
FLG
$6.13B
| $142K | 0.01% |
+3,170
| New | +$144K |
|
|
AKS
1229
CALL
DELISTED
AK Steel Holding Corp
AKS
| $142K | 0.01% |
1,706
-327
| -16% | -$1.43K |
|
|
JONE
1230
DELISTED
Jones Energy, Inc.
JONE
| $142K | 0.01% |
1,887
+1,819
| +2,675% | +$138K |
|
1231
PUT
Applied Materials
AMAT
$447B
| $141K | 0.01% |
3,433
+3,206
| +1,412% | +$70.7K |
|
1232
PUT
Cognizant
CTSH
$20.3B
| $141K | 0.01% |
586
+478
| +443% | +$28.9K |
|
1233
PUT
HF Sinclair
DINO
$16.1B
| $141K | 0.01% |
204
-55
| -21% | -$1.64K |
|
1234
CALL
MGM Resorts International
MGM
$11.5B
| $141K | 0.01% |
1,868
+719
| +63% | +$16.3K |
|
|
SCHW
1235
PUT
Charles Schwab
SCHW
$177B
| $141K | 0.01% |
717
+52
| +8% | +$1.48K |
|
|
AKS
1236
PUT
DELISTED
AK Steel Holding Corp
AKS
| $141K | 0.01% |
1,333
+463
| +53% | +$2.03K |
|
1237
PUT
Altria Group
MO
$120B
| $140K | 0.01% |
2,172
+911
| +72% | +$58.3K |
|
1238
ProShares Short QQQ
PSQ
$686M
| $140K | 0.01% |
532
-717
| -57% | -$190K |
|
1239
Travelers Companies
TRV
$78.5B
| $140K | 0.01% |
+1,180
| New | +$133K |
|
1240
VirnetX Holding Corp
VHC
$52.1M
| $140K | 0.01% |
1,751
+828
| +90% | +$75.9K |
|
|
WCC
1241
WESCO International
WCC
$16.1B
| $140K | 0.01% |
2,720
+1,347
| +98% | +$75.8K |
|
1242
CALL
Edwards Lifesciences
EW
$48.3B
| $139K | 0.01% |
810
+204
| +34% | +$6.98K |
|
1243
Xerox
XRX
$341M
| $139K | 0.01% |
5,574
-11,835
| -68% | -$311K |
|
|
JOY
1244
CALL
DELISTED
Joy Global Inc
JOY
| $139K | 0.01% |
608
+163
| +37% | +$3.08K |
|
|
STRZA
1245
DELISTED
Starz - Series A
STRZA
| $139K | 0.01% |
4,666
+864
| +23% | +$23K |
|
1246
ProShares UltraShort MSCI Brazil Capped
BZQ
$2.42M
| $138K | 0.01% |
65
+28
| +76% | +$77.6K |
|
1247
DigitalBridge
DBRG
$2.93B
| $138K | 0.01% |
3,382
+1,512
| +81% | +$71.9K |
|
1248
PUT
Honeywell
HON
$78B
| $138K | 0.01% |
3,694
+2,245
| +155% | +$231K |
|
1249
PUT
PepsiCo
PEP
$184B
| $138K | 0.01% |
1,879
+451
| +32% | +$46.5K |
|
|
NUVA
1250
DELISTED
NuVasive, Inc.
NUVA
| $138K | 0.01% |
2,326
-894
| -28% | -$48.3K |
|
Similar funds
Simplex Trading's Q2 2016 Portfolio in Review
As of Q2 2016, Simplex Trading held 7,153 positions worth $1.5B, up 19% from $1.25B the previous quarter. Its ten largest holdings account for 19% of the portfolio.
Simplex Trading deployed $178M of net new capital in Q2 2016, opening 1,586 new positions and adding to 2,321 existing holdings. Its largest new stake was Biogen: 56,467 shares worth $13.7M.
By sector, the portfolio is most concentrated in Communication Services at 6.6% of assets, down from 6.9% a quarter earlier, followed by Healthcare and Technology.
On the sell side, the largest reduction was Broadcom, an estimated $36.7M trimmed.
- Simplex Trading's largest Q2 2016 buy was Biogen: 56,467 shares worth $13.7M.
- Simplex Trading added most to LinkedIn Corporation in Q2 2016, an estimated $21.4M increase.
- Simplex Trading's biggest Q2 2016 reduction was Broadcom, cutting an estimated $36.7M.
- Simplex Trading fully exited Alphabet (Google) Class C in Q2 2016, selling an estimated $20.1M.
- Simplex Trading's ten largest holdings make up 19% of its $1.5B portfolio in Q2 2016.
- Simplex Trading opened 1,586 new positions and closed 1,363 in Q2 2016.
- Simplex Trading's portfolio value rose 19% quarter-over-quarter to $1.5B.
Based on Simplex Trading's 13F filing for Q2 2016, filed 18 Jul 2016.