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 | |
|---|---|---|---|---|---|---|
851
CALL
AB InBev
BUD
$155B
| $258K | 0.02% |
405
-89
| -18% | -$11.2K |
|
|
B
852
PUT
Barrick Mining
B
$62.2B
| $258K | 0.02% |
3,022
+1,860
| +160% | +$33.1K |
|
853
PUT
Intel
INTC
$505B
| $258K | 0.02% |
3,155
+1,180
| +60% | +$37K |
|
854
PUT
United States Natural Gas Fund
UNG
$474M
| $258K | 0.02% |
59
-6
| -9% | -$686 |
|
|
ESRX
855
CALL
DELISTED
Express Scripts Holding Company
ESRX
| $258K | 0.02% |
1,665
+436
| +35% | +$32.1K |
|
|
MBLY
856
PUT
DELISTED
Mobileye N.V.
MBLY
| $258K | 0.02% |
570
-274
| -32% | -$10.5K |
|
857
CALL
Universal Display
OLED
$3.75B
| $257K | 0.02% |
292
+99
| +51% | +$6.08K |
|
858
PUT
Stratasys
SSYS
$694M
| $257K | 0.02% |
62
-52
| -46% | -$1.22K |
|
|
ARIA
859
PUT
DELISTED
Ariad Pharmaceuticals Inc
ARIA
| $257K | 0.02% |
2,057
+1,521
| +284% | +$11.4K |
|
860
PUT
NXP Semiconductors
NXPI
$69.3B
| $256K | 0.02% |
363
-404
| -53% | -$34.6K |
|
|
AMED
861
DELISTED
Amedisys
AMED
| $255K | 0.02% |
+5,066
| New | +$256K |
|
862
Abercrombie & Fitch
ANF
$4.07B
| $255K | 0.02% |
14,323
+9,637
| +206% | +$230K |
|
863
CALL
Danaher
DHR
$133B
| $255K | 0.02% |
1,208
-188
| -13% | -$12.3K |
|
864
Fair Isaac
FICO
$27.7B
| $255K | 0.02% |
2,262
+1,073
| +90% | +$116K |
|
865
ProShares Short S&P500
SH
$888M
| $252K | 0.02% |
1,591
+1,140
| +253% | +$184K |
|
866
PUT
Yelp
YELP
$1.35B
| $252K | 0.02% |
191
-744
| -80% | -$18.1K |
|
867
PUT
Pfizer
PFE
$142B
| $251K | 0.02% |
3,147
-6,195
| -66% | -$198K |
|
868
CALL
Applied Materials
AMAT
$445B
| $249K | 0.02% |
1,096
+435
| +66% | +$9.6K |
|
869
CALL
GSK
GSK
$101B
| $249K | 0.02% |
961
+699
| +267% | +$36.8K |
|
870
MarketAxess Holdings
MKTX
$4.04B
| $249K | 0.02% |
1,714
+1,635
| +2,070% | +$217K |
|
871
Northern Trust
NTRS
$21.9B
| $249K | 0.02% |
+3,766
| New | +$262K |
|
872
CALL
Petrobras
PBR
$123B
| $249K | 0.02% |
2,693
-613
| -19% | -$4.06K |
|
873
PUT
Eli Lilly
LLY
$1.06T
| $247K | 0.02% |
2,558
+1,071
| +72% | +$80.6K |
|
874
Tronox
TROX
$1.02B
| $247K | 0.02% |
56,046
+9,643
| +21% | +$54.7K |
|
|
CBPO
875
PUT
DELISTED
China Biologic Products Holdings, Inc.
CBPO
| $247K | 0.02% |
240
+95
| +66% | +$11K |
|
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.