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 | |
|---|---|---|---|---|---|---|
4676
Perion Network
PERI
$380M
| $3K | ﹤0.01% |
862
-202
| -19% | -$876 |
|
4677
PUT
Principal Financial Group
PFG
$24.3B
| $3K | ﹤0.01% |
34
+11
| +48% | +$464 |
|
4678
PennyMac Financial
PFSI
$4.47B
| $3K | ﹤0.01% |
+303
| New | +$3.93K |
|
4679
PUT
Parker-Hannifin
PH
$120B
| $3K | ﹤0.01% |
36
-25
| -41% | -$2.8K |
|
4680
PUT
Pluri
PLUR
$17M
| $3K | ﹤0.01% |
1
| – | – |
|
4681
CALL
Pearson
PSO
$10.6B
| $3K | ﹤0.01% |
+37
| New | +$442 |
|
4682
PUT
Q2 Holdings
QTWO
$3.78B
| $3K | ﹤0.01% |
+47
| New | +$1.18K |
|
4683
CALL
LiveRamp
RAMP
$2.29B
| $3K | ﹤0.01% |
+26
| New | +$565 |
|
4684
RCI Hospitality Holdings
RICK
$202M
| $3K | ﹤0.01% |
384
-1,455
| -79% | -$15K |
|
4685
CALL
Regal Rexnord
RRX
$12.5B
| $3K | ﹤0.01% |
46
-29
| -39% | -$1.74K |
|
4686
CALL
Sabre
SABR
$716M
| $3K | ﹤0.01% |
222
+129
| +139% | +$3.62K |
|
4687
CALL
SAP
SAP
$215B
| $3K | ﹤0.01% |
66
-22
| -25% | -$1.73K |
|
4688
Sally Beauty Holdings
SBH
$1.47B
| $3K | ﹤0.01% |
114
-619
| -84% | -$18.5K |
|
4689
CALL
Sabesp
SBS
$18.4B
| $3K | ﹤0.01% |
155
+31
| +25% | +$45 |
|
4690
PUT
Sibanye-Stillwater
SBSW
$6.05B
| $3K | ﹤0.01% |
56
+9
| +19% | +$115 |
|
|
SCS
4691
PUT
DELISTED
Steelcase
SCS
| $3K | ﹤0.01% |
30
-32
| -52% | -$484 |
|
4692
Steven Madden
SHOO
$3.17B
| $3K | ﹤0.01% |
156
-335
| -68% | -$7.71K |
|
|
SNV
4693
PUT
DELISTED
Synovus
SNV
| $3K | ﹤0.01% |
+16
| New | +$486 |
|
4694
CALL
Teucrium Soybean Fund
SOYB
$61.1M
| $3K | ﹤0.01% |
205
+153
| +294% | +$3.05K |
|
4695
CALL
S&P Global
SPGI
$124B
| $3K | ﹤0.01% |
+59
| New | +$6.33K |
|
4696
CALL
SPX Corp
SPXC
$9.39B
| $3K | ﹤0.01% |
101
-9
| -8% | -$143 |
|
4697
CALL
Sasol
SSL
$7.4B
| $3K | ﹤0.01% |
123
+56
| +84% | +$1.65K |
|
4698
PUT
Steris
STE
$22.9B
| $3K | ﹤0.01% |
10
-3
| -23% | -$210 |
|
4699
PUT
Atlassian
TEAM
$26.5B
| $3K | ﹤0.01% |
+160
| New | +$3.79K |
|
4700
CALL
Telkom Indonesia
TLK
$14.2B
| $3K | ﹤0.01% |
+6
| New | +$166 |
|
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.