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 |
State Street SPDR S&P 500 ETF Trust
SPY
|
+$49.8M |
| 2 |
Apple
AAPL
|
+$24.5M |
| 3 |
Citigroup
C
|
+$23.5M |
| 4 |
Amazon
AMZN
|
+$22.7M |
| 5 |
Alphabet (Google) Class C
GOOG
|
+$18.5M |
Top Sells
| Rank | Stock | Value |
|---|---|---|
| 1 |
LNKD
LinkedIn Corporation
LNKD
|
+$17.4M |
| 2 |
Wells Fargo
WFC
|
+$13.5M |
| 3 |
MDVN
MEDIVATION, INC.
MDVN
|
+$8.62M |
| 4 |
Goldman Sachs
GS
|
+$8.5M |
| 5 |
iShares iBoxx $ High Yield Corporate Bond ETF
HYG
|
+$8.15M |
Sector Composition
| Rank | Sector | Weight |
|---|---|---|
| 1 | Communication Services | 8.76% |
| 2 | Technology | 7.19% |
| 3 | Healthcare | 6.91% |
| 4 | Consumer Discretionary | 6.53% |
| 5 | Financials | 5.37% |
| Name | Market Value | Portfolio Weight | Shares or Principal |
Change in Stake | Capital Flow | |
|---|---|---|---|---|---|---|
|
PERY
1026
DELISTED
Perry Ellis International Inc
PERY
| $210K | 0.01% |
8,462
+6,642
| +365% | +$149K |
|
1027
PUT
Howmet Aerospace
HWM
$115B
| $208K | 0.01% |
+1,162
| New | +$17.5K |
|
1028
Rogers Corp
ROG
$2.37B
| $208K | 0.01% |
2,719
+2,348
| +633% | +$159K |
|
1029
Signet Jewelers
SIG
$3.48B
| $208K | 0.01% |
2,209
-12,978
| -85% | -$1.14M |
|
1030
PUT
Western Digital
WDC
$192B
| $208K | 0.01% |
4,854
-734
| -13% | -$33.8K |
|
1031
CALL
Zimmer Biomet
ZBH
$17.3B
| $208K | 0.01% |
543
+525
| +2,917% | +$56.3K |
|
|
DYN
1032
DELISTED
Dynegy, Inc.
DYN
| $208K | 0.01% |
24,633
-39,484
| -62% | -$389K |
|
1033
CALL
Carnival Corporation Ltd
CCL
$34.6B
| $207K | 0.01% |
459
+9
| +2% | +$450 |
|
1034
PUT
Deere & Co
DE
$165B
| $207K | 0.01% |
2,960
+305
| +11% | +$28.7K |
|
1035
Gaming and Leisure Properties
GLPI
$12.6B
| $206K | 0.01% |
6,747
+5,644
| +512% | +$177K |
|
1036
RCI Hospitality Holdings
RICK
$198M
| $206K | 0.01% |
+12,053
| New | +$156K |
|
|
GWPH
1037
PUT
DELISTED
GW Pharmaceuticals Plc American Depositary Shares
GWPH
| $206K | 0.01% |
534
+122
| +30% | +$14.7K |
|
|
SKX
1038
DELISTED
Skechers
SKX
| $205K | 0.01% |
8,360
-13,890
| -62% | -$320K |
|
1039
USA Compression Partners
USAC
$3.9B
| $205K | 0.01% |
+11,903
| New | +$212K |
|
|
HABT
1040
DELISTED
The Habit Restaurants, Inc. - Class A
HABT
| $205K | 0.01% |
11,902
+9,876
| +487% | +$151K |
|
1041
PUT
Community Health Systems
CYH
$392M
| $204K | 0.01% |
583
-1,099
| -65% | -$7.63K |
|
1042
CALL
PepsiCo
PEP
$184B
| $204K | 0.01% |
2,163
+295
| +16% | +$30.9K |
|
|
GNC
1043
PUT
DELISTED
GNC Holdings, Inc.
GNC
| $204K | 0.01% |
517
+30
| +6% | +$469 |
|
|
ABCO
1044
DELISTED
Advisory Board Co
ABCO
| $204K | 0.01% |
6,143
+6,078
| +9,351% | +$225K |
|
1045
BioCryst Pharmaceuticals
BCRX
$2.38B
| $203K | 0.01% |
32,215
+4,486
| +16% | +$23.3K |
|
1046
FIVE9
FIVN
$1.67B
| $203K | 0.01% |
14,319
+13,570
| +1,812% | +$196K |
|
1047
CALL
Alaska Air
ALK
$4.99B
| $202K | 0.01% |
116
-25
| -18% | -$1.97K |
|
1048
PUT
Franklin Covey
FC
$236M
| $202K | 0.01% |
704
+57
| +9% | +$1.11K |
|
1049
CALL
MACOM Technology Solutions
MTSI
$21.6B
| $202K | 0.01% |
392
+385
| +5,500% | +$16.8K |
|
|
DOG
1050
ProShares Short Dow30
DOG
$97.2M
| $201K | 0.01% |
2,644
+1,885
| +248% | +$151K |
|
Similar funds
Simplex Trading's Q4 2016 Portfolio in Review
As of Q4 2016, Simplex Trading held 7,301 positions worth $1.67B, up 13% from $1.48B the previous quarter. Its ten largest holdings account for 20% of the portfolio.
Simplex Trading deployed $181M of net new capital in Q4 2016, opening 1,543 new positions and adding to 2,137 existing holdings. Its largest new stake was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
By sector, the portfolio is most concentrated in Communication Services at 8.8% of assets, up from 8.4% a quarter earlier, followed by Technology and Healthcare.
On the sell side, the largest reduction was Goldman Sachs, an estimated $8.5M trimmed.
- Simplex Trading's largest Q4 2016 buy was State Street SPDR S&P 500 ETF Trust: 227,870 shares worth $50.9M.
- Simplex Trading added most to Apple in Q4 2016, an estimated $24.5M increase.
- Simplex Trading's biggest Q4 2016 reduction was Goldman Sachs, cutting an estimated $8.5M.
- Simplex Trading fully exited LinkedIn Corporation in Q4 2016, selling an estimated $17.4M.
- Simplex Trading's ten largest holdings make up 20% of its $1.67B portfolio in Q4 2016.
- Simplex Trading opened 1,543 new positions and closed 1,480 in Q4 2016.
- Simplex Trading's portfolio value rose 13% quarter-over-quarter to $1.67B.
Based on Simplex Trading's 13F filing for Q4 2016, filed 11 Jan 2017.