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 | |
|---|---|---|---|---|---|---|
701
PUT
Thermo Fisher Scientific
TMO
$215B
| $367K | 0.02% |
804
+486
| +153% | +$71.7K |
|
|
RDS.A
702
PUT
DELISTED
Royal Dutch Shell PLC ADS Class A
RDS.A
| $367K | 0.02% |
2,149
+648
| +43% | +$33.4K |
|
|
YHOO
703
CALL
DELISTED
Yahoo Inc
YHOO
| $367K | 0.02% |
3,190
-1,581
| -33% | -$64.8K |
|
704
PUT
Broadcom
AVGO
$1.88T
| $366K | 0.02% |
13,720
+60
| +0.4% | +$1.04K |
|
705
Travere Therapeutics
TVTX
$5.2B
| $365K | 0.02% |
19,331
-1,200
| -6% | -$24.5K |
|
706
ProShares VIX Short-Term Futures ETF
VIXY
$213M
| $363K | 0.02% |
53
-16
| -23% | -$128K |
|
|
CIT
707
CALL
DELISTED
CIT Group Inc.
CIT
| $363K | 0.02% |
739
+580
| +365% | +$22.8K |
|
708
Canadian Natural Resources
CNQ
$97.4B
| $361K | 0.02% |
23,140
+20,659
| +833% | +$328K |
|
709
Green Plains
GPRE
$1.25B
| $361K | 0.02% |
+12,983
| New | +$346K |
|
710
PUT
Intel
INTC
$519B
| $360K | 0.02% |
2,869
-2,058
| -42% | -$73.7K |
|
|
JNPR
711
CALL
DELISTED
Juniper Networks
JNPR
| $360K | 0.02% |
1,268
+661
| +109% | +$17.2K |
|
712
CALL
Zillow
Z
$6.98B
| $359K | 0.02% |
935
-44
| -4% | -$1.55K |
|
|
WFM
713
PUT
DELISTED
Whole Foods Market Inc
WFM
| $359K | 0.02% |
1,192
+549
| +85% | +$16.5K |
|
714
PUT
Ambarella
AMBA
$3B
| $358K | 0.02% |
660
-225
| -25% | -$13.6K |
|
|
PXD
715
PUT
DELISTED
Pioneer Natural Resource Co.
PXD
| $358K | 0.02% |
356
-425
| -54% | -$77.9K |
|
716
Marathon Petroleum
MPC
$93.7B
| $357K | 0.02% |
7,096
+5,860
| +474% | +$266K |
|
717
SM Energy
SM
$8.1B
| $357K | 0.02% |
+10,369
| New | +$375K |
|
718
Omega Healthcare
OHI
$15.1B
| $356K | 0.02% |
+11,393
| New | +$352K |
|
|
CXRX
719
PUT
DELISTED
Concordia International Corp. Common Stock
CXRX
| $356K | 0.02% |
726
-85
| -10% | -$260 |
|
720
Dycom Industries
DY
$13.2B
| $355K | 0.02% |
4,431
+2,108
| +91% | +$171K |
|
721
CALL
Texas Capital Bancshares
TCBI
$4.33B
| $355K | 0.02% |
361
+339
| +1,541% | +$22.9K |
|
722
PUT
MetLife
MET
$59.3B
| $354K | 0.02% |
2,457
+379
| +18% | +$17.4K |
|
|
ATVI
723
PUT
DELISTED
Activision Blizzard
ATVI
| $354K | 0.02% |
1,536
-61
| -4% | -$2.44K |
|
724
Energizer
ENR
$1.38B
| $353K | 0.02% |
+7,925
| New | +$362K |
|
725
YPF
YPF
$20.8B
| $353K | 0.02% |
21,408
+13,222
| +162% | +$226K |
|
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.