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 | |
|---|---|---|---|---|---|---|
276
CALL
Verizon
VZ
$185B
| $1.01M | 0.07% |
3,709
-1,317
| -26% | -$68.3K |
|
|
X
277
PUT
DELISTED
US Steel
X
| $1M | 0.07% |
5,574
+1,550
| +39% | +$26K |
|
|
ILG
278
DELISTED
ILG, Inc Common Stock
ILG
| $1M | 0.07% |
62,983
+49,382
| +363% | +$705K |
|
279
T-Mobile US
TMUS
$207B
| $994K | 0.07% |
22,981
+13,217
| +135% | +$542K |
|
280
PUT
The Mosaic Company
MOS
$7.27B
| $992K | 0.07% |
3,601
+3,162
| +720% | +$83.9K |
|
281
PUT
JD.com
JD
$40.8B
| $991K | 0.07% |
3,641
+2,564
| +238% | +$61.9K |
|
282
PUT
Valero Energy
VLO
$92.6B
| $989K | 0.07% |
2,369
+1,122
| +90% | +$63.5K |
|
283
PUT
Microsoft
MSFT
$2.88T
| $987K | 0.07% |
8,538
+2,410
| +39% | +$125K |
|
|
MON
284
CALL
DELISTED
Monsanto Co
MON
| $981K | 0.07% |
2,075
-85
| -4% | -$8.42K |
|
285
CALL
Kraft Heinz
KHC
$30.8B
| $980K | 0.07% |
1,484
+447
| +43% | +$36.8K |
|
|
IMPV
286
DELISTED
Imperva, Inc.
IMPV
| $979K | 0.07% |
22,780
+18,795
| +472% | +$789K |
|
|
FIT
287
PUT
DELISTED
Fitbit, Inc. Class A common stock
FIT
| $978K | 0.07% |
2,027
+457
| +29% | +$6.76K |
|
|
DST
288
DELISTED
DST Systems Inc.
DST
| $978K | 0.07% |
16,810
+7,744
| +85% | +$454K |
|
289
CALL
Sarepta Therapeutics
SRPT
$1.68B
| $977K | 0.07% |
3,578
+1,747
| +95% | +$32.4K |
|
290
Synaptics
SYNA
$4.77B
| $972K | 0.07% |
18,084
+9,798
| +118% | +$673K |
|
291
CALL
Walt Disney
DIS
$168B
| $968K | 0.06% |
5,074
+179
| +4% | +$17.9K |
|
292
Crown Castle
CCI
$33.8B
| $965K | 0.06% |
+9,521
| New | +$864K |
|
293
Wheaton Precious Metals
WPM
$50.5B
| $958K | 0.06% |
40,743
+31,470
| +339% | +$607K |
|
294
CALL
Wynn Resorts
WYNN
$9.86B
| $953K | 0.06% |
2,801
+421
| +18% | +$40K |
|
|
SINA
295
DELISTED
Sina Corp
SINA
| $952K | 0.06% |
18,364
-3,494
| -16% | -$175K |
|
296
PUT
Freeport-McMoran
FCX
$92.7B
| $950K | 0.06% |
4,905
-2,137
| -30% | -$23.7K |
|
297
PUT
VanEck Gold Miners ETF
GDX
$23.4B
| $945K | 0.06% |
18,256
+8,847
| +94% | +$212K |
|
|
ETFC
298
DELISTED
E*Trade Financial Corporation
ETFC
| $940K | 0.06% |
40,037
-4,776
| -11% | -$121K |
|
299
Delta Air Lines
DAL
$55.2B
| $927K | 0.06% |
25,448
-47,098
| -65% | -$2M |
|
300
CALL
Merck
MRK
$316B
| $927K | 0.06% |
5,114
+2,194
| +75% | +$117K |
|
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.