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 | |
|---|---|---|---|---|---|---|
601
American Electric Power
AEP
$72.4B
| $418K | 0.03% |
+5,964
| New | +$390K |
|
|
602
CALL
Visa
V
$672B
| $418K | 0.03% |
3,637
+1,846
| +103% | +$145K |
|
603
Teucrium Corn Fund
CORN
$190M
| $417K | 0.03% |
20,362
+112
| +0.6% | +$2.44K |
|
604
Direxion Daily Energy Bull 2X ETF
ERX
$245M
| $417K | 0.03% |
1,355
-4,341
| -76% | -$1.22M |
|
605
ProShares UltraPro Russell2000
URTY
$333M
| $417K | 0.03% |
11,298
-6,802
| -38% | -$242K |
|
|
CXO
606
DELISTED
CONCHO RESOURCES INC.
CXO
| $417K | 0.03% |
+3,503
| New | +$407K |
|
|
TSRO
607
CALL
DELISTED
TESARO, Inc.
TSRO
| $416K | 0.03% |
290
+114
| +65% | +$5.08K |
|
|
CCMP
608
DELISTED
CMC Materials, Inc. Common Stock
CCMP
| $413K | 0.03% |
9,755
+8,784
| +905% | +$368K |
|
609
PUT
General Motors
GM
$74.1B
| $412K | 0.03% |
1,664
-1,012
| -38% | -$30.7K |
|
610
H&R Block
HRB
$5.01B
| $412K | 0.03% |
17,937
+15,861
| +764% | +$353K |
|
611
Steel Dynamics
STLD
$34.4B
| $412K | 0.03% |
+16,829
| New | +$411K |
|
612
Ligand Pharmaceuticals
LGND
$6.1B
| $410K | 0.03% |
5,516
+5,118
| +1,286% | +$380K |
|
613
Novartis
NVS
$292B
| $410K | 0.03% |
5,553
-3,831
| -41% | -$265K |
|
|
UWC
614
PUT
DELISTED
PROSHARES TR ULTRA RUSSELL3000
UWC
| $408K | 0.03% |
895
-577
| -39% | -$263K |
|
|
EXAM
615
DELISTED
EXAMWORKS GROUP INC COM STK (DE)
EXAM
| $407K | 0.03% |
+11,700
| New | +$399K |
|
616
National Beverage
FIZZ
$2.91B
| $406K | 0.03% |
+12,942
| New | +$330K |
|
617
SBA Communications
SBAC
$18.9B
| $406K | 0.03% |
3,763
+2,819
| +299% | +$286K |
|
|
HOT
618
DELISTED
STARWOOD HOTELS & RESORTS WORLDWIDE, INC.
HOT
| $406K | 0.03% |
+5,500
| New | +$422K |
|
|
SLCA
619
CALL
DELISTED
U.S. SILICA HOLDINGS, INC.
SLCA
| $405K | 0.03% |
1,425
+1,263
| +780% | +$35K |
|
620
Nasdaq
NDAQ
$51.4B
| $404K | 0.03% |
+18,780
| New | +$401K |
|
621
PUT
Union Pacific
UNP
$174B
| $404K | 0.03% |
1,410
+222
| +19% | +$18.8K |
|
|
CMA
622
DELISTED
Comerica
CMA
| $403K | 0.03% |
9,815
-20,029
| -67% | -$854K |
|
623
J.M. Smucker
SJM
$12.6B
| $402K | 0.03% |
+2,640
| New | +$351K |
|
624
Radware
RDWR
$1.24B
| $401K | 0.03% |
35,656
+10,010
| +39% | +$113K |
|
|
MDVN
625
CALL
DELISTED
MEDIVATION, INC.
MDVN
| $401K | 0.03% |
891
-856
| -49% | -$48.5K |
|
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.