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 | |
|---|---|---|---|---|---|---|
3501
Green Dot
GDOT
$746M
| $11K | ﹤0.01% |
+482
| New | +$10.7K |
|
3502
PUT
Groupon
GRPN
$1.05B
| $11K | ﹤0.01% |
9
-2
| -18% | -$148 |
|
3503
CALL
Globalstar
GSAT
$10.2B
| $11K | ﹤0.01% |
106
+5
| +5% | +$133 |
|
3504
CALL
Goodyear
GT
$2.04B
| $11K | ﹤0.01% |
231
+133
| +136% | +$3.81K |
|
3505
CALL
Gran Tierra Energy
GTE
$238M
| $11K | ﹤0.01% |
105
+85
| +425% | +$2.47K |
|
3506
CALL
HDFC Bank
HDB
$119B
| $11K | ﹤0.01% |
232
-300
| -56% | -$4.78K |
|
3507
Howard Hughes
HHH
$3.93B
| $11K | ﹤0.01% |
106
-3,026
| -97% | -$311K |
|
3508
CALL
Huntsman Corp
HUN
$2.06B
| $11K | ﹤0.01% |
491
+336
| +217% | +$4.93K |
|
3509
IAMGOLD
IAG
$8.5B
| $11K | ﹤0.01% |
2,891
-14,619
| -83% | -$49.8K |
|
3510
PUT
Kimco Realty
KIM
$17.8B
| $11K | ﹤0.01% |
+587
| New | +$16.9K |
|
3511
PUT
Lazard
LAZ
$4.23B
| $11K | ﹤0.01% |
20
-37
| -65% | -$1.28K |
|
3512
PUT
Lincoln Electric
LECO
$14.1B
| $11K | ﹤0.01% |
115
+53
| +85% | +$3.19K |
|
3513
CALL
Lennox International
LII
$19B
| $11K | ﹤0.01% |
42
+15
| +56% | +$2.06K |
|
3514
PUT
El Pollo Loco
LOCO
$493M
| $11K | ﹤0.01% |
123
-52
| -30% | -$644 |
|
3515
PUT
Lexicon Pharmaceuticals
LXRX
$991M
| $11K | ﹤0.01% |
750
+740
| +7,400% | +$10K |
|
3516
PUT
Monolithic Power Systems
MPWR
$65.8B
| $11K | ﹤0.01% |
66
-29
| -31% | -$1.9K |
|
3517
PUT
Mettler-Toledo International
MTD
$27B
| $11K | ﹤0.01% |
11
| – | – |
|
3518
Vitamin Cottage Natural Grocers
NGVC
$729M
| $11K | ﹤0.01% |
+915
| New | +$13.5K |
|
|
NVO
3519
CALL
Novo Nordisk
NVO
$220B
| $11K | ﹤0.01% |
312
-256
| -45% | -$7.02K |
|
3520
CALL
OneSpan
OSPN
$562M
| $11K | ﹤0.01% |
115
+98
| +576% | +$1.63K |
|
|
PCH
3521
CALL
DELISTED
PotlatchDeltic
PCH
| $11K | ﹤0.01% |
+165
| New | +$5.58K |
|
3522
CALL
Pinnacle West Capital
PNW
$12.8B
| $11K | ﹤0.01% |
13
-72
| -85% | -$5.37K |
|
3523
Pool Corp
POOL
$6.73B
| $11K | ﹤0.01% |
122
+33
| +37% | +$2.96K |
|
|
P
3524
Everpure Inc
P
$24.7B
| $11K | ﹤0.01% |
+1,026
| New | +$13.4K |
|
3525
PUT
Plus Therapeutics
PSTV
$25.7M
| – | – |
0
| – | – |
|
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.