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 | |
|---|---|---|---|---|---|---|
3801
CALL
Iridium Communications
IRDM
$4.81B
| $8K | ﹤0.01% |
73
-2
| -3% | -$16 |
|
3802
PUT
Kodak
KODK
$812M
| $8K | ﹤0.01% |
190
+126
| +197% | +$1.63K |
|
3803
CALL
LKQ Corp
LKQ
$6.77B
| $8K | ﹤0.01% |
58
-30
| -34% | -$975 |
|
3804
CALL
Macerich
MAC
$7.52B
| $8K | ﹤0.01% |
77
-68
| -47% | -$5.32K |
|
3805
Manulife Financial
MFC
$74.2B
| $8K | ﹤0.01% |
+639
| New | +$9.1K |
|
3806
PUT
MacroGenics
MGNX
$245M
| $8K | ﹤0.01% |
+10
| New | +$226 |
|
3807
PUT
Mitek Systems
MITK
$758M
| $8K | ﹤0.01% |
+83
| New | +$620 |
|
3808
PUT
M&T Bank
MTB
$36.6B
| $8K | ﹤0.01% |
22
-28
| -56% | -$3.25K |
|
3809
PUT
Navios Maritime Partners
NMM
$2.25B
| $8K | ﹤0.01% |
5
-11
| -69% | -$236 |
|
|
NOAH
3810
PUT
Noah Holdings
NOAH
$594M
| $8K | ﹤0.01% |
+117
| New | +$2.88K |
|
3811
CALL
NovoCure
NVCR
$1.89B
| $8K | ﹤0.01% |
150
+79
| +111% | +$989 |
|
|
ODP
3812
CALL
DELISTED
ODP
ODP
| $8K | ﹤0.01% |
62
-140
| -69% | -$6.84K |
|
3813
CALL
ON Semiconductor
ON
$32.8B
| $8K | ﹤0.01% |
206
-41
| -17% | -$390 |
|
3814
PUT
Paycom
PAYC
$7.54B
| $8K | ﹤0.01% |
116
+77
| +197% | +$3.01K |
|
3815
Prestige Consumer Healthcare
PBH
$2.45B
| $8K | ﹤0.01% |
+148
| New | +$8.15K |
|
3816
CALL
Polaris
PII
$4.07B
| $8K | ﹤0.01% |
28
-53
| -65% | -$4.7K |
|
3817
PUT
Dave & Buster's
PLAY
$361M
| $8K | ﹤0.01% |
39
-266
| -87% | -$11K |
|
3818
Portland General Electric
POR
$5.92B
| $8K | ﹤0.01% |
+195
| New | +$7.96K |
|
3819
PUT
Rithm Capital
RITM
$5.46B
| $8K | ﹤0.01% |
+204
| New | +$2.62K |
|
3820
PUT
Regal Rexnord
RRX
$13.5B
| $8K | ﹤0.01% |
13
-137
| -91% | -$8.24K |
|
3821
CALL
Ryanair
RYAAY
$31B
| $8K | ﹤0.01% |
203
+90
| +80% | +$2.92K |
|
|
SAFE
3822
Safehold
SAFE
$1.19B
| $8K | ﹤0.01% |
+182
| New | +$8.56K |
|
|
SAGE
3823
CALL
DELISTED
Sage Therapeutics
SAGE
| $8K | ﹤0.01% |
38
+28
| +280% | +$934 |
|
3824
PUT
SFL Corp
SFL
$1.61B
| $8K | ﹤0.01% |
75
-286
| -79% | -$4.26K |
|
3825
CALL
Silicon Motion
SIMO
$7.51B
| $8K | ﹤0.01% |
46
-198
| -81% | -$8.31K |
|
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.