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 | |
|---|---|---|---|---|---|---|
|
ACAS
2801
CALL
DELISTED
American Capital Ltd
ACAS
| $23K | ﹤0.01% |
865
+236
| +38% | +$3.73K |
|
|
CIT
2802
CALL
DELISTED
CIT Group Inc.
CIT
| $23K | ﹤0.01% |
317
-1,228
| -79% | -$39.9K |
|
2803
PUT
Aflac
AFL
$63.9B
| $22K | ﹤0.01% |
896
+24
| +3% | +$819 |
|
2804
CALL
Ameriprise Financial
AMP
$46.8B
| $22K | ﹤0.01% |
236
+88
| +59% | +$8.5K |
|
2805
PUT
American Tower
AMT
$77.7B
| $22K | ﹤0.01% |
279
+131
| +89% | +$13.9K |
|
2806
CALL
AngioDynamics
ANGO
$562M
| $22K | ﹤0.01% |
180
+156
| +650% | +$1.95K |
|
2807
PUT
Coty
COTY
$2.33B
| $22K | ﹤0.01% |
322
+304
| +1,689% | +$8.33K |
|
|
KYNB
2808
CALL
Kyntra Bio
KYNB
$28.5M
| $22K | ﹤0.01% |
7
+4
| +133% | +$1.83K |
|
|
FL
2809
CALL
DELISTED
Foot Locker
FL
| $22K | ﹤0.01% |
198
-611
| -76% | -$35.4K |
|
2810
CALL
Fluor
FLR
$7.29B
| $22K | ﹤0.01% |
117
-6
| -5% | -$312 |
|
|
FOLD
2811
PUT
DELISTED
Amicus Therapeutics
FOLD
| $22K | ﹤0.01% |
152
+100
| +192% | +$699 |
|
2812
Harmony Gold Mining
HMY
$9.92B
| $22K | ﹤0.01% |
6,237
-10,232
| -62% | -$35.4K |
|
2813
CALL
Lands' End
LE
$361M
| $22K | ﹤0.01% |
387
+279
| +258% | +$5.65K |
|
2814
PUT
Lattice Semiconductor
LSCC
$17.6B
| $22K | ﹤0.01% |
+509
| New | +$2.84K |
|
2815
PUT
Methanex
MEOH
$4.32B
| $22K | ﹤0.01% |
92
-19
| -17% | -$607 |
|
2816
Monolithic Power Systems
MPWR
$65.5B
| $22K | ﹤0.01% |
334
-1,522
| -82% | -$99.7K |
|
2817
PUT
Murphy Oil
MUR
$5.58B
| $22K | ﹤0.01% |
288
-19
| -6% | -$575 |
|
2818
Northern Oil and Gas
NOG
$2.3B
| $22K | ﹤0.01% |
483
+432
| +847% | +$20.3K |
|
2819
CALL
PVH
PVH
$3.71B
| $22K | ﹤0.01% |
36
-231
| -87% | -$21.7K |
|
2820
CALL
Sprouts Farmers Market
SFM
$7.04B
| $22K | ﹤0.01% |
233
+44
| +23% | +$1.13K |
|
2821
PUT
Shake Shack
SHAK
$2.3B
| $22K | ﹤0.01% |
100
-179
| -64% | -$6.5K |
|
2822
CALL
State Street
STT
$50.9B
| $22K | ﹤0.01% |
213
-122
| -36% | -$7.29K |
|
|
TOUR
2823
PUT
Tuniu
TOUR
$55.4M
| $22K | ﹤0.01% |
+10
| New | +$962 |
|
2824
CALL
Vince Holding Corp
VNCE
$76.2M
| $22K | ﹤0.01% |
22
+20
| +1,000% | +$1.17K |
|
|
WCN
2825
CALL
Waste Connections
WCN
$42.8B
| $22K | ﹤0.01% |
252
| – | – |
|
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.