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 | |
|---|---|---|---|---|---|---|
626
CALL
FedEx
FDX
$76.6B
| $400K | 0.03% |
1,159
-575
| -33% | -$93.2K |
|
627
PTC
PTC
$13.1B
| $399K | 0.03% |
10,630
+10,208
| +2,419% | +$366K |
|
628
PUT
RH
RH
$3.31B
| $399K | 0.03% |
557
-465
| -45% | -$16.6K |
|
629
Nokia
NOK
$57.4B
| $398K | 0.03% |
69,978
+68,360
| +4,225% | +$387K |
|
|
MKTO
630
DELISTED
MARKETO INC COM STK (DE)
MKTO
| $398K | 0.03% |
+11,457
| New | +$317K |
|
631
Brookdale Senior Living
BKD
$3.5B
| $397K | 0.03% |
25,764
+10,870
| +73% | +$190K |
|
|
IPHI
632
DELISTED
INPHI CORPORATION
IPHI
| $397K | 0.03% |
+12,413
| New | +$389K |
|
633
Coca-Cola Europacific Partners
CCEP
$46.9B
| $396K | 0.03% |
11,117
+5,711
| +106% | +$269K |
|
|
DISH
634
DELISTED
DISH Network Corp.
DISH
| $396K | 0.03% |
7,575
+4,013
| +113% | +$196K |
|
635
PUT
iShares Morningstar Value ETF
ILCV
$1.3B
| $394K | 0.03% |
9,438
-1,832
| -16% | -$78.1K |
|
636
CALL
McDonald's
MCD
$187B
| $394K | 0.03% |
3,254
+1,453
| +81% | +$182K |
|
637
PUT
ProShares Ultra S&P500
SSO
$8.02B
| $394K | 0.03% |
10,672
-1,784
| -14% | -$14.5K |
|
|
MON
638
PUT
DELISTED
Monsanto Co
MON
| $394K | 0.03% |
1,297
+630
| +94% | +$62.4K |
|
639
Dillards
DDS
$9.2B
| $393K | 0.03% |
6,493
+1,788
| +38% | +$117K |
|
640
Direxion Daily MSCI Brazil Bull 2X ETF
BRZU
$105M
| $392K | 0.03% |
+427
| New | +$316K |
|
641
Ciena
CIEN
$56.2B
| $391K | 0.03% |
20,890
-2,436
| -10% | -$44.1K |
|
642
PUT
RTX Corp
RTX
$262B
| $391K | 0.03% |
4,751
+2,456
| +107% | +$157K |
|
|
TYC
643
CALL
DELISTED
TYCO INTL PLC COM SHS (IRL)
TYC
| $391K | 0.03% |
914
+240
| +36% | +$10.1K |
|
|
HA
644
DELISTED
Hawaiian Holdings, Inc.
HA
| $390K | 0.03% |
10,298
-11,655
| -53% | -$493K |
|
|
PVG
645
DELISTED
PRETIUM RESOURCES INC.
PVG
| $389K | 0.03% |
34,792
+5,536
| +19% | +$43.9K |
|
|
BLUE
646
PUT
DELISTED
bluebird bio
BLUE
| $388K | 0.03% |
12
| – | – |
|
647
Williams-Sonoma
WSM
$26.2B
| $387K | 0.03% |
14,850
+8,002
| +117% | +$219K |
|
648
Banco Santander
SAN
$197B
| $386K | 0.03% |
102,865
+91,313
| +790% | +$397K |
|
|
OUTR
649
DELISTED
OUTERWALL INC
OUTR
| $384K | 0.03% |
9,156
-21,849
| -70% | -$886K |
|
650
PUT
Deutsche Bank
DB
$68.1B
| $383K | 0.03% |
2,192
+421
| +24% | +$6.32K |
|
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.