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 | |
|---|---|---|---|---|---|---|
2976
PUT
First Majestic Silver
AG
$8B
| $18K | ﹤0.01% |
414
+260
| +169% | +$2.71K |
|
2977
CALL
Allegiant Air
ALGT
$2.67B
| $18K | ﹤0.01% |
62
+15
| +32% | +$2.31K |
|
2978
PUT
AutoZone
AZO
$50.1B
| $18K | ﹤0.01% |
72
-46
| -39% | -$35.4K |
|
|
SLAI
2979
PUT
DELISTED
SOLAI Ltd ADS
SLAI
| – | – |
-3
| Closed | -$3.6K |
|
2980
Century Aluminum
CENX
$4.42B
| $18K | ﹤0.01% |
+2,888
| New | +$20.3K |
|
2981
PUT
Gold Fields
GFI
$29.3B
| $18K | ﹤0.01% |
336
-227
| -40% | -$946 |
|
2982
PUT
Howard Hughes
HHH
$3.97B
| $18K | ﹤0.01% |
83
+82
| +8,200% | +$8.42K |
|
2983
CALL
Hartford Financial Services
HIG
$38.5B
| $18K | ﹤0.01% |
284
-753
| -73% | -$33.6K |
|
2984
CALL
HealthEquity
HQY
$8.25B
| $18K | ﹤0.01% |
54
-101
| -65% | -$2.65K |
|
2985
CALL
Infosys
INFY
$46.1B
| $18K | ﹤0.01% |
694
+592
| +580% | +$5.54K |
|
2986
iShares Russell 1000 Growth ETF
IWF
$120B
| $18K | ﹤0.01% |
752
-8,496
| -92% | -$212K |
|
2987
CALL
KLA
KLAC
$262B
| $18K | ﹤0.01% |
490
-110
| -18% | -$789 |
|
2988
PUT
Strategy Inc
MSTR
$35.4B
| $18K | ﹤0.01% |
1,490
-220
| -13% | -$4.05K |
|
2989
CALL
ArcelorMittal
MT
$49.9B
| $18K | ﹤0.01% |
183
-266
| -59% | -$4.04K |
|
2990
PUT
Omega Healthcare
OHI
$15.3B
| $18K | ﹤0.01% |
201
+136
| +209% | +$4.54K |
|
2991
PUT
OSI Systems
OSIS
$3.53B
| $18K | ﹤0.01% |
122
-63
| -34% | -$3.47K |
|
2992
PUT
Pitney Bowes
PBI
$2.46B
| $18K | ﹤0.01% |
107
+66
| +161% | +$1.27K |
|
2993
Plug Power
PLUG
$2.89B
| $18K | ﹤0.01% |
9,752
+7,942
| +439% | +$15.1K |
|
2994
PUT
Prudential
PUK
$36.4B
| $18K | ﹤0.01% |
+60
| New | +$2.21K |
|
|
SAFE
2995
PUT
Safehold
SAFE
$1.19B
| $18K | ﹤0.01% |
52
+34
| +189% | +$1.6K |
|
2996
PUT
Molson Coors Class B
TAP
$7.67B
| $18K | ﹤0.01% |
228
+183
| +407% | +$18K |
|
2997
PUT
USA Compression Partners
USAC
$3.75B
| $18K | ﹤0.01% |
167
-62
| -27% | -$873 |
|
2998
PUT
Weibo
WB
$1.93B
| $18K | ﹤0.01% |
235
+210
| +840% | +$5.11K |
|
|
ZEUS
2999
CALL
DELISTED
Olympic Steel
ZEUS
| $18K | ﹤0.01% |
23
-6
| -21% | -$134 |
|
3000
PUT
Corpay
CPAY
$24.7B
| $18K | ﹤0.01% |
167
-22
| -12% | -$3.27K |
|
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.